├── .github ├── ISSUE_TEMPLATE │ ├── ---bug-report.md │ └── ---documentation.md ├── PULL_REQUEST_TEMPLATE.md └── workflows │ └── build.yml ├── .gitignore ├── .project ├── .settings └── org.eclipse.m2e.core.prefs ├── LICENSE ├── README.md ├── java-core ├── .classpath ├── .factorypath ├── .project ├── .settings │ ├── org.eclipse.jdt.apt.core.prefs │ ├── org.eclipse.jdt.core.prefs │ └── org.eclipse.m2e.core.prefs ├── pom.xml └── src │ └── main │ ├── java │ └── ai │ │ └── certifai │ │ ├── basic │ │ ├── ex1 │ │ │ ├── HelloWorld.java │ │ │ ├── HelloWorld.md │ │ │ └── metadata │ │ │ │ └── publicClass.jpg │ │ ├── ex2 │ │ │ ├── PackagingIntro.java │ │ │ ├── PackagingIntro.md │ │ │ └── metadata │ │ │ │ ├── JavaStructure.png │ │ │ │ ├── JavaStructure_.png │ │ │ │ ├── groupID_.jpg │ │ │ │ └── packageName.jpg │ │ ├── ex3 │ │ │ ├── BluePrint.java │ │ │ ├── BluePrint.md │ │ │ └── metadata │ │ │ │ ├── cloning.gif │ │ │ │ ├── public.png │ │ │ │ ├── spaceX.jpg │ │ │ │ ├── spaceXengine.jpg │ │ │ │ └── tenor.gif │ │ ├── ex4 │ │ │ ├── JavaTerminology.md │ │ │ ├── Run.java │ │ │ └── metadata │ │ │ │ ├── commandprompt.PNG │ │ │ │ ├── environment.png │ │ │ │ ├── java.jpg │ │ │ │ ├── javacommand.png │ │ │ │ ├── javacommanderror.png │ │ │ │ ├── javaenvironmentpath.png │ │ │ │ ├── javaterm.jpg │ │ │ │ ├── javaterm1.jpg │ │ │ │ ├── jvm.png │ │ │ │ └── output.jpg │ │ ├── ex5 │ │ │ ├── If_ElseIf_Else.java │ │ │ └── If_ElseIf_Else.md │ │ ├── ex6 │ │ │ ├── DataTypes.java │ │ │ └── DataTypes.md │ │ └── ex7 │ │ │ ├── ForLoop.java │ │ │ ├── ForLoop.md │ │ │ └── metadata │ │ │ ├── forLoop.jpg │ │ │ └── nestedloop.png │ │ ├── intermediate │ │ ├── ex10 │ │ │ ├── ExceptionHandling.java │ │ │ ├── ExceptionHandling.md │ │ │ └── metadata │ │ │ │ └── exception.jpg │ │ ├── ex11 │ │ │ ├── WhileLoop.java │ │ │ ├── WhileLoop.md │ │ │ └── metadata │ │ │ │ ├── 2.jpg │ │ │ │ ├── Capture.JPG │ │ │ │ ├── dowhileloop.jpg │ │ │ │ └── whileloop.jpg │ │ ├── ex12 │ │ │ ├── MapImp.java │ │ │ ├── MapImp.md │ │ │ └── metadata │ │ │ │ ├── country_code.jpg │ │ │ │ ├── key-value.jpg │ │ │ │ ├── key-value2.jpg │ │ │ │ └── receipt.jpg │ │ ├── ex13 │ │ │ ├── SubString.java │ │ │ ├── SubString.md │ │ │ └── metadata │ │ │ │ ├── ref.jpg │ │ │ │ └── substring.JPG │ │ ├── ex14 │ │ │ ├── AdvancedSubString.java │ │ │ ├── AdvancedSubString.md │ │ │ └── metadata │ │ │ │ └── sample.jpg │ │ ├── ex15 │ │ │ ├── QuickSortImp.java │ │ │ ├── QuickSortImp.md │ │ │ └── metadata │ │ │ │ └── sort.png │ │ ├── ex8 │ │ │ ├── OrderedCollection.java │ │ │ ├── OrderedCollection.md │ │ │ └── metadata │ │ │ │ ├── array.JPG │ │ │ │ └── container.png │ │ └── ex9 │ │ │ ├── AdvancedForLoop.java │ │ │ ├── AdvancedForLoop.md │ │ │ └── metadata │ │ │ ├── 0.jpg │ │ │ ├── 1.jpg │ │ │ └── 2.jpg │ │ ├── maven │ │ ├── RunMaven.java │ │ ├── RunMaven.md │ │ └── metadata │ │ │ ├── dependency_0.jpg │ │ │ ├── dependency_1.jpg │ │ │ ├── dependency_2.jpg │ │ │ ├── dependency_3.jpg │ │ │ ├── import0.jpg │ │ │ ├── import_1.jpg │ │ │ ├── import_2.jpg │ │ │ ├── invalidate.jpg │ │ │ ├── java.png │ │ │ ├── javaEnv.jpg │ │ │ ├── javarelease.jpg │ │ │ ├── javaversion.jpg │ │ │ ├── m2.jpg │ │ │ ├── maven0.jpg │ │ │ ├── maven1.jpg │ │ │ ├── maven2.jpg │ │ │ ├── maven3.jpg │ │ │ ├── maven4.jpg │ │ │ ├── maven_0.png │ │ │ ├── maven_create_project_0.png │ │ │ ├── maven_create_project_0_0.png │ │ │ ├── maven_create_project_1.png │ │ │ ├── maven_create_project_2.png │ │ │ ├── maven_create_project_3.png │ │ │ ├── maven_graphic_0.jpg │ │ │ ├── maven_graphic_1.jpg │ │ │ ├── maven_graphic_2.jpg │ │ │ ├── pom_.jpg │ │ │ ├── pom_1.png │ │ │ ├── pom_2.png │ │ │ ├── reload.jpg │ │ │ └── simplest_pom.png │ │ ├── quickstart.md │ │ └── util │ │ ├── Config.java │ │ ├── Conversion.java │ │ ├── Dashboard.java │ │ ├── FileLoader.java │ │ ├── InputParser.java │ │ ├── OutputParser.java │ │ ├── PathHandler.java │ │ └── SpringUtilities.java │ └── resources │ ├── ai │ └── certifai │ │ ├── basic │ │ ├── ex1 │ │ │ └── HelloWorld │ │ │ │ └── output.txt │ │ ├── ex2 │ │ │ └── PackagingIntro │ │ │ │ └── output.txt │ │ ├── ex3 │ │ │ └── BluePrint │ │ │ │ ├── input.txt │ │ │ │ └── output.txt │ │ ├── ex5 │ │ │ └── If_ElseIf_Else │ │ │ │ ├── input.txt │ │ │ │ └── output.txt │ │ ├── ex6 │ │ │ └── DataTypes │ │ │ │ ├── input.txt │ │ │ │ └── output.txt │ │ └── ex7 │ │ │ └── ForLoop │ │ │ ├── input.txt │ │ │ └── output.txt │ │ └── intermediate │ │ ├── ex10 │ │ └── ExceptionHandling │ │ │ └── output.txt │ │ ├── ex11 │ │ └── WhileLoop │ │ │ ├── 1.txt │ │ │ ├── 2.txt │ │ │ ├── 3.txt │ │ │ ├── 4.txt │ │ │ ├── 5.txt │ │ │ ├── 6.txt │ │ │ ├── 7.txt │ │ │ ├── input.txt │ │ │ └── output.txt │ │ ├── ex12 │ │ └── MapImp │ │ │ ├── input.txt │ │ │ └── output.txt │ │ ├── ex13 │ │ └── SubString │ │ │ ├── input.txt │ │ │ └── output.txt │ │ ├── ex14 │ │ └── AdvancedSubString │ │ │ ├── input.txt │ │ │ └── output.txt │ │ ├── ex15 │ │ └── QuickSortImp │ │ │ ├── input.txt │ │ │ └── output.txt │ │ ├── ex8 │ │ └── OrderedCollection │ │ │ ├── input.txt │ │ │ └── output.txt │ │ └── ex9 │ │ └── AdvancedForLoop │ │ ├── input.txt │ │ └── output.txt │ └── solutionStructureGuidance.md ├── metadata ├── codeSample.JPG ├── dashboard.jpg ├── fileStructure.jpg ├── head.gif └── try.jpg └── pom.xml /.github/ISSUE_TEMPLATE/---bug-report.md: -------------------------------------------------------------------------------- 1 | --- 2 | name: "\U0001F41B Bug report" 3 | about: Create a report to help us improve 4 | title: '' 5 | labels: '' 6 | assignees: '' 7 | 8 | --- 9 | 10 | ## Describe the bug 11 | A clear and concise description of what the bug is. 12 | 13 | ## To Reproduce 14 | Steps to reproduce the behavior: 15 | 1. Go to '...' 16 | 2. Click on '....' 17 | 3. Scroll down to '....' 18 | 4. See error 19 | 20 | ## Expected behavior 21 | A clear and concise description of what you expected to happen. 22 | 23 | ## Screenshots 24 | If applicable, add screenshots to help explain your problem. 25 | 26 | ## Desktop Details (please complete the following information): 27 | - OS: [e.g. Windows] 28 | - Browser [e.g. Chrome, Safari] 29 | - Version [e.g. 22] 30 | 31 | ## Additional context 32 | Add any other context about the problem here. -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE/---documentation.md: -------------------------------------------------------------------------------- 1 | --- 2 | name: "\U0001F4DA Documentation" 3 | about: Report an issue with regards to TrainingLabs documentation in Readme or Wiki 4 | title: '' 5 | labels: '' 6 | assignees: '' 7 | 8 | --- 9 | 10 | ## Readme/Wiki Page 11 | Write down the page name or URL here. 12 | 13 | ## Faulty/Unclear Documentation 14 | A clear and concise description of where the documentation is unclear or inaccurate. 15 | 16 | Attach screenshot here if possible. 17 | 18 | ## Suggested Edits 19 | Kindly suggest edits as candidates to replace the inaccurate documentation, if applicable. 20 | 21 | ## Additional context 22 | Add any other context about the problem here. -------------------------------------------------------------------------------- /.github/PULL_REQUEST_TEMPLATE.md: -------------------------------------------------------------------------------- 1 | # Description 2 | 3 | Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. 4 | 5 | Fixes # (issue) 6 | 7 | ## Type of change 8 | 9 | - [ ] New Exercise 10 | - [ ] Bug fix (non-breaking change which fixes an issue) 11 | - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) 12 | - [ ] This change requires a documentation update 13 | - [ ] Adding automation capabilities with GitHub Action 14 | 15 | # Tested on? 16 | 17 | - [ ] Windows 18 | - [ ] Linux Ubuntu 19 | - [ ] Centos 20 | - [ ] Mac 21 | - [ ] Others (State here -> xxx ) 22 | 23 | # Checklist: 24 | 25 | - [ ] My code follows the style guidelines of this project 26 | - [ ] I have performed a self-review of my own code 27 | - [ ] I have commented my code, particularly in hard-to-understand areas 28 | - [ ] I have made corresponding changes to the documentation 29 | - [ ] My changes generate no new warnings 30 | - [ ] I have added tests that prove my fix is effective or that my feature works 31 | - [ ] New and existing unit tests pass locally with my changes 32 | - [ ] Any dependent changes have been merged 33 | -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | # This code will build the Java project with Maven and execute code test with Sonar Cloud 2 | 3 | name: Build & Sonar Test 4 | on: 5 | push: 6 | branches: 7 | - main 8 | 9 | pull_request: 10 | types: [synchronize, review_requested] 11 | 12 | jobs: 13 | build: 14 | name: Build with Maven 15 | runs-on: ubuntu-latest 16 | steps: 17 | - uses: actions/checkout@v2 18 | 19 | - name: Set up JDK 11 20 | uses: actions/setup-java@v2 21 | with: 22 | java-version: '11' 23 | distribution: 'zulu' 24 | 25 | - name: Cache Maven packages 26 | uses: actions/cache@v1 27 | with: 28 | path: ~/.m2 29 | key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }} 30 | restore-keys: ${{ runner.os }}-m2 31 | 32 | - name: Build Project 33 | run: mvn -B verify 34 | 35 | sonar: 36 | name: Build & Test with Sonar Cloud 37 | runs-on: ubuntu-latest 38 | steps: 39 | - uses: actions/checkout@v2 40 | with: 41 | fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis 42 | 43 | - name: Set up JDK 11 44 | uses: actions/setup-java@v2 45 | with: 46 | java-version: '11' 47 | distribution: 'zulu' 48 | 49 | - name: Cache SonarCloud packages 50 | uses: actions/cache@v1 51 | with: 52 | path: ~/.sonar/cache 53 | key: ${{ runner.os }}-sonar 54 | restore-keys: ${{ runner.os }}-sonar 55 | 56 | - name: Cache Maven packages 57 | uses: actions/cache@v1 58 | with: 59 | path: ~/.m2 60 | key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }} 61 | restore-keys: ${{ runner.os }}-m2 62 | 63 | - name: Build and analyze 64 | env: 65 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 66 | SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }} 67 | run: mvn -B verify org.sonarsource.scanner.maven:sonar-maven-plugin:sonar -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Compiled class file 2 | *.class 3 | 4 | # Log file 5 | *.log 6 | 7 | # BlueJ files 8 | *.ctxt 9 | 10 | # Mobile Tools for Java (J2ME) 11 | .mtj.tmp/ 12 | 13 | # Package Files # 14 | *.jar 15 | *.war 16 | *.nar 17 | *.ear 18 | *.zip 19 | *.tar.gz 20 | *.rar 21 | 22 | hs_err_pid* 23 | 24 | # mac file 25 | .DS_Store 26 | 27 | target/ 28 | 29 | *.class 30 | .idea/* 31 | *.iml 32 | *.tmp 33 | 34 | #log file 35 | *.log 36 | 37 | output/* 38 | -------------------------------------------------------------------------------- /.project: -------------------------------------------------------------------------------- 1 | 2 | 3 | learn-java-the-certifai-way 4 | 5 | 6 | 7 | 8 | 9 | org.eclipse.m2e.core.maven2Builder 10 | 11 | 12 | 13 | 14 | 15 | org.eclipse.m2e.core.maven2Nature 16 | 17 | 18 | 19 | 1621387210162 20 | 21 | 30 22 | 23 | org.eclipse.core.resources.regexFilterMatcher 24 | node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__ 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /.settings/org.eclipse.m2e.core.prefs: -------------------------------------------------------------------------------- 1 | activeProfiles= 2 | eclipse.preferences.version=1 3 | resolveWorkspaceProjects=true 4 | version=1 5 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU AFFERO GENERAL PUBLIC LICENSE 2 | Version 3, 19 November 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU Affero General Public License is a free, copyleft license for 11 | software and other kinds of works, specifically designed to ensure 12 | cooperation with the community in the case of network server software. 13 | 14 | The licenses for most software and other practical works are designed 15 | to take away your freedom to share and change the works. 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2 | 3 |

4 | 5 |

6 |

7 | 8 | Sonar Cloud 9 | 10 |

11 | 12 |

13 |

14 | 15 | GitHub 16 | 17 | 18 | Discord 19 | 20 | 21 | Documentation 22 | 23 | 24 | Sonar Cloud 25 | 26 |

27 | 28 | ## What You Will Learn 29 | - Through the building blocks of Java snippets, you will able to understand the gist of Java programming in no time. 30 | 31 | ## What You Need 32 | - Grit to go through the repository! 33 | - [Oracle JDK 1.8](https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html) or alternative open source JDK 1.8 version 34 | - As of today, the repository was tested with 35 | - Oracle JDK 1.8 36 | - OpenJDK 1.8 37 | - BellSoft Liberica JDK 1.8 38 | - [Apache Maven 3.5](https://maven.apache.org/download.cgi) or later 39 | - [Intellij IDE](https://www.jetbrains.com/idea/download/) 40 | 41 | **Takeaway:** 42 | - Java - Programming Language 43 | - Apache Maven - Java Dependency Manager 44 | - Intellij IDE - Editor 45 | 46 | 47 | ## Repository Structure 48 | 49 | - [**Basic**](https://github.com/CertifaiAI/learn-java-the-certifai-way/tree/master/java-core/src/main/java/ai/certifai/basic) 50 | - [**Introduction to Apache Maven**](https://github.com/CertifaiAI/learn-java-the-certifai-way/tree/master/java-core/src/main/java/ai/certifai/maven) 51 | - [**Intermediate**](https://github.com/CertifaiAI/learn-java-the-certifai-way/tree/master/java-core/src/main/java/ai/certifai/intermediate) 52 | 53 | In order to gain the most benefits, choose the topic to look deeper into at your own pace. 54 | 55 | If starting from scratch, walkthrough the folder in the above order to gain the maximum learning experience. 56 | 57 | ## How to Use This Repository 58 | 59 | - Guides in the form of markdown in each ex* folder will shows what to do in the particular exercise. 60 |

61 | 62 |

63 | 64 | - Only modify program code in the designated area in each exercise. \ 65 | Markdown in each specific folder will provide a more detailed instructions. 66 | 67 |

68 | 69 |

70 | 71 | 72 | - No answer will be provided. The use cases were carefully designed to determine the successful run of the code. 73 |

74 | 75 |

76 | 77 | - Don't memorize the code. Human have horrrible memories. It WONT bring you anywhere. 78 | 79 |

80 | 81 |

82 | 83 | - Try the very best to craft the answer through getting the hands dirty. Follow your own pace. 84 |

85 | 86 |

87 | 88 | -------------------------------------------------------------------------------- /java-core/.classpath: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /java-core/.factorypath: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | -------------------------------------------------------------------------------- /java-core/.project: -------------------------------------------------------------------------------- 1 | 2 | 3 | java-core 4 | 5 | 6 | 7 | 8 | 9 | org.eclipse.jdt.core.javabuilder 10 | 11 | 12 | 13 | 14 | org.eclipse.m2e.core.maven2Builder 15 | 16 | 17 | 18 | 19 | 20 | org.eclipse.jdt.core.javanature 21 | org.eclipse.m2e.core.maven2Nature 22 | 23 | 24 | 25 | 1621387210158 26 | 27 | 30 28 | 29 | org.eclipse.core.resources.regexFilterMatcher 30 | node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__ 31 | 32 | 33 | 34 | 35 | -------------------------------------------------------------------------------- /java-core/.settings/org.eclipse.jdt.apt.core.prefs: -------------------------------------------------------------------------------- 1 | eclipse.preferences.version=1 2 | org.eclipse.jdt.apt.aptEnabled=true 3 | org.eclipse.jdt.apt.genSrcDir=target/generated-sources/annotations 4 | org.eclipse.jdt.apt.genTestSrcDir=target/generated-test-sources/test-annotations 5 | -------------------------------------------------------------------------------- /java-core/.settings/org.eclipse.jdt.core.prefs: -------------------------------------------------------------------------------- 1 | eclipse.preferences.version=1 2 | org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 3 | org.eclipse.jdt.core.compiler.compliance=1.8 4 | org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled 5 | org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning 6 | org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore 7 | org.eclipse.jdt.core.compiler.processAnnotations=enabled 8 | org.eclipse.jdt.core.compiler.release=disabled 9 | org.eclipse.jdt.core.compiler.source=1.8 10 | -------------------------------------------------------------------------------- /java-core/.settings/org.eclipse.m2e.core.prefs: -------------------------------------------------------------------------------- 1 | activeProfiles= 2 | eclipse.preferences.version=1 3 | resolveWorkspaceProjects=true 4 | version=1 5 | -------------------------------------------------------------------------------- /java-core/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 18 | 20 | 21 | ai.certifai 22 | learn-java-the-certifai-way 23 | 1.0-SNAPSHOT 24 | 25 | 26 | 4.0.0 27 | java-core 28 | java-core 29 | 30 | 31 | 32 | org.apache.maven.plugins 33 | maven-compiler-plugin 34 | 35 | 8 36 | 8 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | org.projectlombok 46 | lombok 47 | 1.18.12 48 | 49 | 50 | org.slf4j 51 | slf4j-api 52 | 1.7.26 53 | 54 | 55 | ch.qos.logback 56 | logback-classic 57 | 1.2.3 58 | 59 | 60 | 61 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex1/HelloWorld.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex1; 18 | 19 | import ai.certifai.util.OutputParser; 20 | 21 | 22 | /** 23 | * Iconic Hello World Quickstart 24 | * 25 | * @author codenamewei 26 | */ 27 | class HelloWorld 28 | { 29 | static OutputParser out; 30 | 31 | public static void main(String[] args) 32 | { 33 | out = new OutputParser(HelloWorld.class); 34 | 35 | /** 36 | Enter your code here 37 | Complete the program by making changes to line 38 38 | Tips: change the content assign to variable firstString 39 | **/ 40 | String firstString = null; 41 | 42 | out.evaluate(firstString); 43 | 44 | out.printResult(); 45 | } 46 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex1/HelloWorld.md: -------------------------------------------------------------------------------- 1 | # QuickStart! 2 | 3 | **What To Do** 4 | Pass string of `Hello World!` to the variable [_firstString_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex1/HelloWorld.java#L38) 5 | 6 | 7 | **Sample Output** 8 | ` 9 | Hello World! 10 | ` 11 | 12 | **Key Takeaways** 13 | 14 |

15 | 16 |

17 | 18 | - Class name should be in the form of Noun, where each word first letter is of capital letter. 19 | This naming convention is **CamelCase**. 20 | - Example: 21 | - HelloWorld 22 | - BluePrint 23 | - DataTypes 24 | - ExceptionHandling 25 | 26 | - Non-static non-final name use **CamelCase** as well, with first word being small case. 27 | 28 | - There should be **one public class name per file** 29 | 30 | - The class name must be same with file name for Java to recognize the entry point. 31 | There should be a **public** access modified before it. 32 | Else will throw a compile time error. (Try it :computer:) 33 | 34 | - Contrary to Python, each line should end with semicolon. 35 | 36 | 37 | **Quiz** 38 | 1. Can more than 1 class appear in one .java file? (Try it :computer:) 39 | 40 | 2. What do you understand about the line [_package ai.certifai.basic.ex1;_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex1/HelloWorld.java#L16)? 41 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex1/metadata/publicClass.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex1/metadata/publicClass.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/PackagingIntro.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex2; 18 | 19 | import ai.certifai.util.OutputParser; 20 | 21 | /** 22 | * A thorough definition about the idea of Package in java 23 | * 24 | * @author codenamewei 25 | */ 26 | public class PackagingIntro 27 | { 28 | static OutputParser out; 29 | 30 | public static void main(String[] args) 31 | { 32 | out = new OutputParser(PackagingIntro.class); 33 | 34 | /** 35 | Enter your code here 36 | Complete the program by making changes to line 38 37 | Tips: change the content assign to variable packageName 38 | **/ 39 | String packageName = null; 40 | String output = "Package Name = " + packageName; 41 | 42 | out.evaluate(output); 43 | 44 | out.printResult(); 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/PackagingIntro.md: -------------------------------------------------------------------------------- 1 | # QuickStart! 2 | 3 | **What To Do** 4 | Pass `new PackagingIntro().getClass().getCanonicalName()` to the variable [_packageName_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex2/PackagingIntro.java#L38) 5 | 6 | 7 | **Sample Output** 8 | ` 9 | Package Name = ai.certifai.basic.ex2.PackagingIntro 10 | ` 11 | 12 | **Key Takeaways** 13 | - Basic file directory structure of java project by Apache Maven 14 |

15 | 16 |

17 | 18 | - A few key components to take note of 19 | 20 |

21 | 22 |

23 | 24 | - **Group ID**: Reverse domain name of an organization. 25 | - Group ID contribute to the beginning of packages name 26 |

27 | 28 |

29 | 30 | - **Packages** group related classes, interfaces, and sub-packages. 31 | - Packages are defined all in lower case. 32 | - Packages are period-delimited. 33 | - Essentially, packages are used to prevent conflicts with file names. 34 |

35 | 36 |

37 | 38 | **Quiz** 39 | 40 | 1. What does the keyword **_public_** means? 41 | 42 | 2. What does the word **_static_** means? 43 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/metadata/JavaStructure.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex2/metadata/JavaStructure.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/metadata/JavaStructure_.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex2/metadata/JavaStructure_.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/metadata/groupID_.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex2/metadata/groupID_.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex2/metadata/packageName.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex2/metadata/packageName.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/BluePrint.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex3; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * Introduction to one of the most important concept in Java - class 24 | * 25 | * @author codenamewei 26 | */ 27 | class PersonalProfile 28 | { 29 | public String name; 30 | 31 | public int height; 32 | public int weight; 33 | 34 | //constructor 35 | public PersonalProfile(String myName, int myHeight, int myWeight) 36 | { 37 | name = myName; 38 | height = myHeight; 39 | weight = myWeight; 40 | } 41 | 42 | /** 43 | * Enter your code here 44 | */ 45 | } 46 | 47 | 48 | public class BluePrint 49 | { 50 | public static void main(String[] args) 51 | { 52 | InputParser in = new InputParser(BluePrint.class); 53 | OutputParser out = new OutputParser(BluePrint.class, in); 54 | 55 | PersonalProfile johnProfile = new PersonalProfile("John Doe", 165, 100); 56 | 57 | 58 | /** 59 | Enter your code here 60 | Complete the program by uncommenting line 59-61 and making accordingly changes in PersonalProfile class 61 | **/ 62 | out.evaluate("Name: " + johnProfile.name); 63 | out.evaluate("Height: " + johnProfile.height); 64 | out.evaluate("Width: " + johnProfile.weight); 65 | 66 | out.printResult(); 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/BluePrint.md: -------------------------------------------------------------------------------- 1 | # Construction of Class 2 | 3 | ## **Background** 4 | ### Analogy 1: Cloning 5 |

6 | 7 |

8 | 9 | ### Analogy 2: Create identical items out of the blueprint design 10 | 11 | What is **blueprint**? 12 | Reproduction of technical drawing to allow rapid and accurate production of an unlimited number of copies. 13 | 14 | 15 |

16 | 17 |

18 | 19 |

20 | 21 |

22 | 23 | 24 | **What To Do** 25 | 1. Uncomment 3 lines of code [_from line 59 to 61_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex3/BluePrint.java#L59-L61) 26 | 2. Add functions in the class [_PersonalProfile.class_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex3/BluePrint.java#L40-L42) to support item 1 to works. 27 | 28 | **Example Code** 29 | ``` 30 | public {returning format} {function name}() 31 | { 32 | return {variable name}; 33 | } 34 | ``` 35 | 36 | 37 | **Expected Output** 38 | ``` 39 | Total Number: 1 40 | Name: John Doe 41 | Height: 165 42 | Width: 100 43 | ``` 44 | 45 | **Key Takeaways** 46 | - Did you changed the modifier of the variable _name_, _height_, _width_ to make it works? 47 | 48 |

49 | 50 |

51 | 52 | # **Don't do it. Why?** 53 |

54 | 55 |

56 | 57 | The **private** prevent outside entities from access the variables. 58 | You can only deal with the **private** members through getter and setter functions. 59 | 60 | - **void**: Returns no value. 61 | 62 | - There are access modifiers to select on the class, package, function, variables level. 63 | 64 | | Access Modifiers | Function | 65 | | --- | ----------- | 66 | | public | Visible to everywhere. The method / variable can be called from anywhere from outside the program as well. | 67 | | protected | The member can only be accessed by its own class, and subclass of its class in its own package | 68 | | private | The member can only be accessed by own class | 69 | 70 | - **Always** provide variable's name which express it's purpose and meaning clearly. 71 | 72 | ## **Quiz** 73 | 74 | 1. Is .java program equal to machine code? 75 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/metadata/cloning.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex3/metadata/cloning.gif -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/metadata/public.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex3/metadata/public.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/metadata/spaceX.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex3/metadata/spaceX.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/metadata/spaceXengine.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex3/metadata/spaceXengine.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex3/metadata/tenor.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex3/metadata/tenor.gif -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex4/JavaTerminology.md: -------------------------------------------------------------------------------- 1 | # Java Key Terminologies 2 | 3 | **What To Do** 4 | 1. Open up your command prompt / terminal 5 |

6 | 7 |

8 | 9 | 2. Type in java command below 10 | ``` 11 | java -version 12 | ``` 13 | If the output is as shown below, proceed to Step 3. 14 |

15 | 16 |

17 | 18 | If an error message below happens when trying to run _java_ command, go to **Java Debugging Steps** session at the end of this page. 19 |

20 | 21 |

22 | 23 | 3. Run the commands below in the command prompt \ 24 | Note: {yourpath} is the absolute path to the folder of java-fundamentals 25 | ``` 26 | cd {yourpath}\learn-java-the-certifai-way\java-core\src\main\java 27 | javac ai\certifai\basic\ex4\Run.java 28 | java ai.certifai.basic.ex4.Run 12 29 | ``` 30 | **_Note_**: When running a Java application using Java, you supply the classname NOT the bytecode filename. 31 | 32 |

33 | 34 |

35 | 36 | 4. Rerun the last command changing the last value between even and odd numbers 37 | ``` 38 | java ai.certifai.basic.ex4.Run {number} 39 | ``` 40 | 41 | ## **How To Consider this Exercise Success** 42 | Able to run step 4 from the previous session 43 | 44 | 45 | ## **Key Takeaways** 46 | 47 | **- Java Virtual Machine** 48 | - virtual machine that enables a computer to run Java-based programs 49 |

50 | 51 |

52 | 53 | Installation of Java can come in either of the one flavours 54 | 1. Java Development Kit (JDK) 55 | 2. Java Runtime Environment (JRE) 56 | 57 | 58 | **- Java Development Kit (JDK)** 59 | - Java software development environment including JVM, compiler, debugger and other tools for developing Java applets and applications. 60 | 61 | **- Java Runtime Environment (JRE)** 62 | - A part of programs of JDK 63 | - The JRE creates the JVM and ensures dependencies are available to your Java programs 64 | 65 |

66 | 67 |

68 | 69 | **Java Source Code (.java)** 70 | - Java file contains Java source code 71 | 72 | **Java Bytecode (.class)** 73 | 74 | - Machine language of the Java virtual machine 75 | - Converted from Java source code(.java) to be executable by JVM 76 | - A Java class file(.class) is a file containing Java bytecode that is created by a Java compiler as a result of successful compilation. 77 |

78 | 79 |

80 | 81 | 82 | **Java Debugging Steps** 83 | 1. When java command not found, the cause can be 84 | - Don't have a Java JRE or JDK installed at all. 85 | 86 | **Solution** 87 | Install [Java JDK 8](https://www.oracle.com/pt/java/technologies/javase/javase-jdk8-downloads.html) 88 | 89 | - Did not update the Path Enviroment Variable. 90 | 91 | **Solution** 92 | 93 | 1. Find out where is your java program at. Try _C:\Program Files\Java\java*_ or _C:\Program Files\AdoptOpenJDK\java*_. 94 |

95 | 96 |

97 | 98 | 2. Open up **Edit the system environment variables**. 99 | Add _C:\Program Files\Java\java*\bin_ or _C:\Program Files\AdoptOpenJDK\java*\bin_ to the PATH variable. 100 | 101 |

102 | 103 |

104 | 105 |

106 | 107 |

108 | 109 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex4/Run.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex4; 18 | 19 | /** 20 | * Basic Java File to test run with terminal / command prompt 21 | * 22 | * @author codenamewei 23 | */ 24 | public class Run 25 | { 26 | public static void main(String[] args) 27 | { 28 | if(args.length == 1) 29 | { 30 | try 31 | { 32 | int value = Integer.parseInt(args[0]); 33 | 34 | if(value % 2 == 0) 35 | { 36 | System.out.println("Even number"); 37 | } 38 | else 39 | { 40 | System.out.println("Odd number"); 41 | } 42 | }catch(Exception e) 43 | { 44 | System.out.println("Argument parse integer failed: " + e); 45 | } 46 | 47 | } 48 | else 49 | { 50 | System.out.println("There should be one input"); 51 | } 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex4/metadata/commandprompt.PNG: -------------------------------------------------------------------------------- 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Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex5; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * If - Else If - Else Loop 24 | * 25 | * @author codenamewei 26 | */ 27 | public class If_ElseIf_Else 28 | { 29 | static OutputParser out; 30 | static InputParser in; 31 | 32 | public static void main(String[] args) 33 | { 34 | in = new InputParser(If_ElseIf_Else.class); 35 | out = new OutputParser(If_ElseIf_Else.class, in); 36 | 37 | int totalUseCases = in.getTotalUseCases(); 38 | 39 | for(int i = 0; i < totalUseCases; ++i) 40 | { 41 | int input = in.getIntegerInput(); 42 | 43 | System.out.println(input); 44 | String output = compute(input); 45 | 46 | out.evaluate(output); 47 | } 48 | 49 | out.printResult(); 50 | } 51 | 52 | public static String compute(int input) 53 | { 54 | /** 55 | Enter your code here to complete this function 56 | Uncomment placeholder line 56 when done 57 | **/ 58 | return ""; 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex5/If_ElseIf_Else.md: -------------------------------------------------------------------------------- 1 | # If - Else if - Else loop 2 | 3 | ## **What To Do** 4 | Fill in function [_String compute(int input)_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex5/If_ElseIf_Else.java#L50-L57) to fulfill the conditions above 5 | 6 | Given an integer, _input_, return an output string of **Even**, **Odd**, **Out Of Range**, **Special** 7 | git add 8 | - if _input_ more or equal to 50 but less or equal to 100, return **Special** 9 | - if _input_ greater than 10000, return **Out of Range** 10 | 11 | ``` 12 | if(condition 1) 13 | { 14 | //code block 15 | } 16 | else if(condition 2) 17 | { 18 | //code block 19 | } 20 | else if(condition 3) 21 | { 22 | //code block 23 | } 24 | else 25 | { 26 | //code block 27 | } 28 | ``` 29 | 30 | ## **Sample Input** 31 | 1 32 | 33 | ## **Sample Output** 34 | ` 35 | Odd 36 | ` 37 | 38 | ## **Key Takeaways** 39 | 40 | - How to build if-elseif-else loop 41 | 42 | ## **Quiz** 43 | 44 | 1. How to do if-else loop in one line code? 45 | 2. What is the differences between operator OR (|) and operator logical-OR (||)?\ 46 | Likewise for operator AND (&) and operator logical-AND (&&) 47 | ``` 48 | if((condition 1) | (condition 2)) 49 | { 50 | //code block 51 | } 52 | else if((condition 1) || (condition 2)) 53 | { 54 | //code block 55 | } 56 | else 57 | { 58 | //code block 59 | } 60 | ``` 61 | 62 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex6/DataTypes.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex6; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * Data Types 24 | * 25 | * @author codenamewei 26 | */ 27 | public class DataTypes 28 | { 29 | static OutputParser out; 30 | static InputParser in; 31 | 32 | public static void main(String[] args) 33 | { 34 | in = new InputParser(DataTypes.class); 35 | out = new OutputParser(DataTypes.class, in); 36 | 37 | /** 38 | Enter your code here 39 | Tips: out.evaluate({content}) has to be used for the program to be success 40 | **/ 41 | 42 | out.printResult(); 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex6/DataTypes.md: -------------------------------------------------------------------------------- 1 | # Types of Data 2 | 3 | ## **What To Do** 4 | Define these 4 values in the respective data format and get it evaluated 5 | 6 | - "Nasi Lemak!" as **String** 7 | - 20 as **int** 8 | - 100.054 as **float** 9 | - true as **boolean** 10 | 11 | Fill in the code in [this range](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex6/DataTypes.java#L36-L39) 12 | 13 | ## **Sample Input** 14 | 15 | ``` 16 | int value = 2; 17 | out.evaluate(value); 18 | ``` 19 | 20 | ## **Key Takeaways** 21 | 22 | - Different primitive data types in Java: 23 | - int 24 | - double 25 | - String 26 | - boolean 27 | 28 | - There's wrapper for all these primitive data types. 29 | On a general note: these wrapper class wrap a primitive type into an object. 30 | Subsequently, providing more flexibility in storing and manipulating the data. 31 | 32 | | Primitive Data Type | Object | 33 | | --- | ----------- | 34 | | int | Integer | 35 | | double | Double | 36 | | float | Float | 37 | | boolean | Boolean | 38 | 39 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex7/ForLoop.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.basic.ex7; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * For Loop 24 | * 25 | * @author codenamewei 26 | */ 27 | public class ForLoop 28 | { 29 | static OutputParser out; 30 | static InputParser in; 31 | 32 | public static void main(String[] args) 33 | { 34 | in = new InputParser(ForLoop.class); 35 | out = new OutputParser(ForLoop.class, in); 36 | 37 | int totalUseCases = in.getTotalUseCases(); 38 | 39 | for(int i = 0; i < totalUseCases; ++i) 40 | { 41 | int linesPerUseCase = in.getCurrentUseCaseTotalLines(); 42 | 43 | /** 44 | * Enter your code here 45 | * Tips: out.evaluate({content}) has to be used to pass the program 46 | */ 47 | } 48 | 49 | out.printResult(); 50 | 51 | } 52 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex7/ForLoop.md: -------------------------------------------------------------------------------- 1 | # For Loop 2 | For loop is a very important implementation in most programming. 3 | 4 |

5 | 6 |

7 | 8 | ## **What To Do** 9 | Variable [**linesPerUseCase**](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/basic/ex7/ForLoop.java#L40) defines how many lines per use case. \ 10 | Use a **for loop** to get string input of each line. **Tips: _in.getStringInput()_** \ 11 | and get it evaluated by passing to _**out.evaluate(~~)**_. 12 | 13 | ## **Sample Input** 14 | ``` 15 | 3 16 | hello world 17 | Big screen 18 | Game OfThronews 19 | ``` 20 | 21 | ## **Sample Output** 22 | ``` 23 | hello world 24 | Big screen 25 | Game OfThronews 26 | ``` 27 | 28 | ## **Key Takeaways** 29 | - Mastering for-loop is very important for effective use of Java 30 | 31 | - Nested for-loop is very common for complex use case. 32 |

33 | 34 |

35 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex7/metadata/forLoop.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex7/metadata/forLoop.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/basic/ex7/metadata/nestedloop.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/basic/ex7/metadata/nestedloop.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex10/ExceptionHandling.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex10; 18 | 19 | import ai.certifai.util.OutputParser; 20 | 21 | import java.io.File; 22 | import java.util.Scanner; 23 | 24 | /** 25 | * Exception Handling 26 | * 27 | * @author codenamewei 28 | */ 29 | public class ExceptionHandling 30 | { 31 | public static void main(String[] args) throws Exception 32 | { 33 | OutputParser out = new OutputParser(ExceptionHandling.class); 34 | 35 | out.evaluate(readFile()); 36 | out.evaluate(divideByZero()); 37 | out.evaluate(retrieveObject()); 38 | 39 | out.printResult(); 40 | } 41 | 42 | private static String readFile() throws Exception 43 | { 44 | String filePathInString = "metadata/sample.txt"; //FILE DID NOT EXIST 45 | 46 | //Rewrite the statement below onwards to catch the exception with try-catch-finally 47 | File filePath = new File(filePathInString); 48 | Scanner input = new Scanner(filePath); 49 | return ""; 50 | } 51 | 52 | private static String divideByZero() throws Exception 53 | { 54 | int value = 1000 / 0; 55 | 56 | return ""; 57 | } 58 | 59 | private static String retrieveObject() throws Exception 60 | { 61 | String buffer = null; 62 | 63 | buffer.length(); 64 | 65 | return ""; 66 | } 67 | } 68 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex10/ExceptionHandling.md: -------------------------------------------------------------------------------- 1 | # Exception Handling 2 | 3 | There's two types of errors in general in programming. 4 | - compile time error 5 | - runtime error (errors and exceptions) 6 | 7 | Exception handling in Java is designed to handle the **runtime exceptions** 8 | so that the normal flow of the application can be maintained. 9 | 10 | For example: 11 | Having code blocks below 12 | 13 | ```$xslt 14 | public class HelloWorld 15 | { 16 | public static void main(String args) 17 | { 18 | line 1 statement; 19 | 20 | line 2 statement; //RUNTIME ERRORS OCCUR! 21 | line 3 statement; 22 | 23 | line 4 statement; 24 | line 5 statement; 25 | 26 | } 27 | } 28 | ``` 29 | 30 |

31 | 32 |

33 | 34 | If exception happens on statement 2, the rest of the code will not be executed. 35 | Reason being is the scenario will be ill-defined and the results will not be in the range of expectation. 36 | 37 | ### try - catch - finally 38 | 39 | Exception is written in this way in general. 40 | 41 | ```$xslt 42 | try 43 | { 44 | //statement 45 | } 46 | catch(Exception e) 47 | { 48 | //statement 49 | } 50 | finally 51 | { 52 | //statement 53 | } 54 | ``` 55 | ## **What To Do** 56 | 57 | Rewrite the function block 58 | - [_readFile()_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex10/ExceptionHandling.java#L41) 59 | - [_divideByZero()_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex10/ExceptionHandling.java#L51) 60 | - [_retrieveObject()_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex10/ExceptionHandling.java#L58) 61 | to catch Exception 62 | **Tips:** return e.getClass().getCanonicalName() for each function block for program to successfully execute 63 | 64 | 65 | ## **Sample Input** 66 | 67 | ``` 68 | int value = 1000 / 0; 69 | ``` 70 | 71 | ## **Sample Output** 72 | 73 | ``` 74 | java.lang.ArithmeticException 75 | ``` 76 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex10/metadata/exception.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex10/metadata/exception.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/WhileLoop.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex11; 18 | 19 | import ai.certifai.util.FileLoader; 20 | import ai.certifai.util.InputParser; 21 | import ai.certifai.util.OutputParser; 22 | 23 | import java.io.BufferedReader; 24 | import java.io.File; 25 | import java.io.FileReader; 26 | 27 | /** 28 | * While Loop 29 | * 30 | * @author codenamewei 31 | */ 32 | public class WhileLoop 33 | { 34 | static OutputParser out; 35 | static InputParser in; 36 | 37 | public static void main(String[] args) throws Exception 38 | { 39 | in = new InputParser(WhileLoop.class); 40 | out = new OutputParser(WhileLoop.class, in); 41 | 42 | int totalUseCases = in.getTotalUseCases(); 43 | 44 | for(int i = 0; i < totalUseCases; ++i) 45 | { 46 | String inputFileName = in.getStringInput(); 47 | 48 | File inputFilePath = new FileLoader().getInputLoader(WhileLoop.class, inputFileName); 49 | 50 | out.evaluate(getTotalNumberOfLines(inputFilePath)); 51 | } 52 | 53 | out.printResult(); 54 | } 55 | 56 | private static int getTotalNumberOfLines(File inputFile) throws Exception 57 | { 58 | BufferedReader reader = new BufferedReader(new FileReader(inputFile)); 59 | 60 | /** 61 | Modify your code in this function 62 | Change the return value to get the success of the program 63 | **/ 64 | return 0; 65 | } 66 | 67 | } 68 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/WhileLoop.md: -------------------------------------------------------------------------------- 1 | # While Loop 2 | 3 | While loop repeatedly executes a target statement as long as a given condition is true. 4 | 5 |

6 | 7 |

8 | 9 | ## **What To Do** 10 | This program (specifically BufferedReader) reads in content from specific input file. 11 | There's no way of knowing how many times to loop through the BufferedReader to get total number of lines beforehand. 12 | 13 | A while loop has to be used to iterate through **BufferedReader reader** to get next lines if next line exist. 14 | 15 | The function _getTotalNumberOfLines_ takes in a File and return total number of lines of the specific file. 16 | 17 | Fill in function [_private static void _getTotalNumberOfLines_(File inputFile) throws Exception_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex11/WhileLoop.java#L58-L62). 18 | 19 | **Tips:** 20 | - Use **_reader.readLine()_** to read from file 21 | - If there is no next line, **_reader.readLine()_** will return null; 22 | - Change line 63 to return number of lines in the specific file. 23 | 24 | ## **Sample Input** 25 | With input file of 26 |

27 | 28 |

29 | 30 | ## **Sample Output** 31 | 7 32 | 33 | ## **Above and Beyond** 34 | - Check out the variant of a while loop - **Do-While loop** 35 |

36 | 37 |

38 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/2.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/Capture.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/Capture.JPG -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/dowhileloop.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/dowhileloop.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/whileloop.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex11/metadata/whileloop.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/MapImp.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex12; 18 | 19 | import ai.certifai.util.Conversion; 20 | import ai.certifai.util.InputParser; 21 | import ai.certifai.util.OutputParser; 22 | import lombok.NonNull; 23 | 24 | import java.util.HashMap; 25 | import java.util.List; 26 | import java.util.Map; 27 | 28 | /** 29 | * Map Loop 30 | * 31 | * @author codenamewei 32 | */ 33 | public class MapImp 34 | { 35 | static OutputParser out; 36 | static InputParser in; 37 | static final String GET = "get"; 38 | static final String DELETE = "delete"; 39 | static final String ADD = "add"; 40 | 41 | public static void main(String[] args) throws Exception 42 | { 43 | in = new InputParser(MapImp.class); 44 | out = new OutputParser(MapImp.class, in); 45 | 46 | Map keyValue = new HashMap(); 47 | 48 | initKeyValue(keyValue); 49 | 50 | int totalUseCases = in.getTotalUseCases(); 51 | 52 | for(int i = 0; i < totalUseCases; ++i) 53 | { 54 | String line = in.getStringInput(); 55 | 56 | List arrayInput = Conversion.StringToListString(line); 57 | 58 | if(arrayInput.size() == 3) 59 | { 60 | configKeyValue(keyValue, arrayInput.get(0), arrayInput.get(1), arrayInput.get(2)); 61 | } 62 | else if(arrayInput.size() == 2) 63 | { 64 | configKeyValue(keyValue, arrayInput.get(0), arrayInput.get(1), null); 65 | } 66 | else 67 | { 68 | throw new Exception("Array size not fall under expectation. Program not expected to work fine"); 69 | } 70 | } 71 | 72 | out.printResult(); 73 | } 74 | 75 | 76 | private static void configKeyValue(@NonNull Map keyValue, @NonNull String action, @NonNull String country, String phoneCode) { 77 | 78 | /** 79 | Modify your code in this function 80 | Do the accordingly changes to this function to reach the successful run of the code 81 | Tips: out.evaluate({content}) has to be used for the program to be success 82 | **/ 83 | 84 | } 85 | 86 | private static void initKeyValue(Map keyValue) 87 | { 88 | keyValue.put("Italy", "39"); 89 | keyValue.put("Malaysia", "60"); 90 | keyValue.put("Indonesia", "62"); 91 | keyValue.put("Singapore", "65"); 92 | keyValue.put("China", "86"); 93 | keyValue.put("Russia", "7"); 94 | 95 | } 96 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/MapImp.md: -------------------------------------------------------------------------------- 1 | # Map <> HashMap 2 | A Map is an object that maps keys to values. 3 |

4 | 5 |

6 | 7 | 8 | In program MapImp, Map<>HashMap is implemented to store country name as key and country code as value. 9 |

10 | 11 |

12 | 13 | **When do we use Map<>HashMap** \ 14 | Maps are used for when you want to associate a key with a value and Lists are an ordered collection. 15 | 16 | **Example Scenario:** 17 | - Item names matching with products 18 |

19 | 20 |

21 | 22 | - User IDs matching with names 23 |

24 | 25 |

26 | 27 | ## **What To Do** 28 | Given a Map of Country Name and Country Code 29 | 30 | ``` 31 | Italy: 39 32 | Malaysia: 60 33 | Indonesia: 62 34 | Singapore: 65 35 | China: 86 36 | Russia: 7 37 | ``` 38 | 39 | Input comes in the form of 40 | 41 | - GET country_name 42 | - If country_name key exist, write **out.evaluate({get the country code})**, else write **out.evaluate("False")** \ 43 | 44 | - DELETE country_name 45 | - If DELETE an existing key, write **out.evaluate("True")**, else write **out.evaluate("False")** \ 46 | 47 | - ADD country_name country_code 48 | - If ADD a key which is not exist in the Map<>HashMap, write **out.evaluate("True")** and put the key & value exist in **Map keyValue* 49 | - Else, write **out.evaluate("False")** 50 | 51 | **Only make changes to the function [_configKeyValue(...)_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex12/MapImp.java#L77-L81)** 52 | 53 | ## **Sample Input** 54 | get Malaysia 55 | delete Malaysia 56 | delete Malaysia 57 | add Singapore 65 58 | 59 | ## **Sample Output** 60 | 60 61 | True 62 | False 63 | True 64 | 65 | ## **Key Takeaways** 66 | 67 | **Properties of Map:** 68 | - Unique Key. There should not be duplicates key. 69 | - Keys should be all belongs to one type of Object. Likewise for values. 70 | - Example 71 | - Map keyValue = new HashMap(); 72 | - Map countryCode = new HashMap(); 73 | - Map method = new HashMap(); 74 | 75 | - Not an ordered collection. Does not return keys and values in the same order they have been inserted. 76 | 77 | 78 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/country_code.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/country_code.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/key-value.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/key-value.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/key-value2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/key-value2.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/receipt.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex12/metadata/receipt.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex13/SubString.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex13; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * SubString 24 | * 25 | * @author codenamewei 26 | */ 27 | public class SubString 28 | { 29 | static OutputParser out; 30 | static InputParser in; 31 | 32 | static final String FAIL_MESSAGE = "It's not a file!"; 33 | 34 | public static void main(String[] args) 35 | { 36 | in = new InputParser(SubString.class); 37 | out = new OutputParser(SubString.class, in); 38 | 39 | int totalUseCases = in.getTotalUseCases(); 40 | 41 | for(int i = 0; i < totalUseCases; ++i) 42 | { 43 | String input = in.getStringInput(); 44 | 45 | out.evaluate(getExtensionIfExist(input)); 46 | } 47 | 48 | out.printResult(); 49 | } 50 | 51 | private static String getExtensionIfExist(String input) 52 | { 53 | /** 54 | Modify your code in this function 55 | Do the accordingly changes to this function to reach the successful run of the code 56 | Change the returning value in line 57 57 | **/ 58 | return null; 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex13/SubString.md: -------------------------------------------------------------------------------- 1 | # Manipulation of String 2 | 3 | Getting a substring of a string is a very common operation to perform 4 |

5 | 6 |

7 | 8 | ## **What To Do** 9 | With each string input, return the file formats if exist 10 |

11 | 12 |

13 | 14 | ### Note: 15 | - Only get the extension name without the dot '.' 16 | - If the corresponding input is a string without file extension format, return **It's not a file!** 17 | 18 | Modify the function [_getExtensionIfExist_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex13/SubString.java#L50-L57) and the returning value of it 19 | 20 | ## **Sample Input** 21 | Example.pdf\ 22 | SampleFolder 23 | 24 | ## **Sample Output** 25 | pdf\ 26 | It's not a file! 27 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex13/metadata/ref.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex13/metadata/ref.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex13/metadata/substring.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex13/metadata/substring.JPG -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex14/AdvancedSubString.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex14; 18 | 19 | import ai.certifai.util.InputParser; 20 | import ai.certifai.util.OutputParser; 21 | 22 | /** 23 | * SubString 24 | * 25 | * @author codenamewei 26 | */ 27 | public class AdvancedSubString 28 | { 29 | static OutputParser out; 30 | static InputParser in; 31 | 32 | public static void main(String[] args) 33 | { 34 | in = new InputParser(AdvancedSubString.class); 35 | out = new OutputParser(AdvancedSubString.class, in); 36 | 37 | int totalUseCases = in.getTotalUseCases(); 38 | 39 | for(int i = 0; i < totalUseCases; ++i) 40 | { 41 | String input = in.getStringInput(); 42 | 43 | out.evaluate(processString(input)); 44 | } 45 | 46 | out.printResult(); 47 | } 48 | 49 | private static String processString(String input) 50 | { 51 | /** 52 | Modify your code in this function 53 | Do the accordingly changes to this function to reach the successful run of the code 54 | Change the returning value in line 55 55 | */ 56 | return null; 57 | } 58 | 59 | } 60 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex14/AdvancedSubString.md: -------------------------------------------------------------------------------- 1 | # Advanced Manipulation of String 2 | 3 | Lets build on the previous exercises to carry on a more complicated operations for string handling. 4 | 5 | ## **What To Do** 6 | With each string input, perform the following operations and return the string 7 | - Remove the file extension if any 8 | - Remove the spaces in the beginning and end of string (**Tips:** use string.trim()) 9 | - Replace spaces in between letters with underscore (_) 10 | 11 |

12 | 13 |

14 | 15 | 16 | Modify function [_processString_](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex14/AdvancedSubString.java#L50-55) and change the returning result in line 55 17 | 18 | ## **Sample Input** 19 | Example.pdf\ 20 | Sample Folder 21 | 22 | ## **Sample Output** 23 | Example\ 24 | Sample_Folder 25 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex14/metadata/sample.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex14/metadata/sample.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex15/QuickSortImp.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex15; 18 | 19 | import ai.certifai.util.Conversion; 20 | import ai.certifai.util.InputParser; 21 | import ai.certifai.util.OutputParser; 22 | 23 | import java.util.List; 24 | 25 | class QuickSort 26 | { 27 | /** 28 | Modify your code in this class 29 | Do the accordingly changes to reach the successful run of the code 30 | **/ 31 | 32 | public List sort(List array, int beginIndex, int endIndex) 33 | { 34 | 35 | return null; 36 | } 37 | } 38 | 39 | /** 40 | Quick Sort 41 | * 42 | @author codenamewei 43 | */ 44 | public class QuickSortImp 45 | { 46 | static OutputParser out; 47 | static InputParser in; 48 | 49 | public static void main(String[] args) 50 | { 51 | in = new InputParser(QuickSortImp.class); 52 | out = new OutputParser(QuickSortImp.class, in); 53 | 54 | int totalUseCases = in.getTotalUseCases(); 55 | 56 | for(int i = 0; i < totalUseCases; ++i) 57 | { 58 | String line = in.getStringInput(); 59 | 60 | List arrayInput = Conversion.StringToListInteger(line); 61 | 62 | List arrayOutput = new QuickSort().sort(arrayInput, 0, arrayInput.size() - 1); 63 | 64 | out.evaluate(Conversion.ListIntegerToString(arrayOutput)); 65 | 66 | } 67 | out.printResult(); 68 | 69 | } 70 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex15/QuickSortImp.md: -------------------------------------------------------------------------------- 1 | # Quick Sort 2 | 3 | Quick sort is a highly efficient sorting algorithm and is based on partitioning of array of data into smaller arrays. 4 | 5 |

6 | 7 |

8 | 9 | The quicksort algorithm choose a pivot point, and partitioning the collection around the pivot, so that elements smaller than the pivot are before it, and elements larger than the pivot are after it 10 | 11 | The pivot can be 12 | - the first element in the array 13 | - the last element in the array 14 | - an element of a random index 15 | 16 | ## **What To Do** 17 | 18 | Modify class [**_QuickSort_**](https://github.com/CertifaiAI/learn-java-the-certifai-way/blob/master/java-core/src/main/java/ai/certifai/intermediate/ex15/QuickSortImp.java#L24-L36) to perform the quick sort algorithm. 19 | The returninng **_List_** of the function **_sort_** should be an increasing order array. 20 | 21 | ## **Sample Input** 22 | 2 6 3 17 12 23 | 24 | ## **Sample Output** 25 | 2 3 6 12 17 26 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex15/metadata/sort.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex15/metadata/sort.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex8/OrderedCollection.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex8; 18 | 19 | import ai.certifai.util.Conversion; 20 | import ai.certifai.util.InputParser; 21 | import ai.certifai.util.OutputParser; 22 | 23 | import java.util.List; 24 | 25 | /** 26 | * List ArrayList 27 | * 28 | * @author codenamewei 29 | */ 30 | public class OrderedCollection 31 | { 32 | static OutputParser out; 33 | static InputParser in; 34 | 35 | public static void main(String[] args) 36 | { 37 | in = new InputParser(OrderedCollection.class); 38 | out = new OutputParser(OrderedCollection.class, in); 39 | 40 | int totalUseCases = in.getTotalUseCases(); 41 | 42 | for(int i = 0; i < totalUseCases; ++i) 43 | { 44 | String line = in.getStringInput(); 45 | 46 | List arrayInput = Conversion.StringToListInteger(line); 47 | 48 | iterate(arrayInput); 49 | } 50 | 51 | out.printResult(); 52 | } 53 | 54 | public static void iterate(List array) 55 | { 56 | /** 57 | Enter your code in this function 58 | Tips: out.evaluate({content}) has to be used for the program to be success 59 | **/ 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex8/OrderedCollection.md: -------------------------------------------------------------------------------- 1 | # List<>ArrayList 2 | List interface with ArrayList class create a dynamic array that contains objects. 3 | 4 |

5 | 6 |

7 | 8 | In lament terms, a **List<>ArrayList** is a specified container that store values. \ 9 | The values in a single container has to be the same type. \ 10 | Example: 11 | - an array of integers 12 | - an array of floating values 13 | - an array of string 14 | 15 |

16 | 17 |

18 | 19 | ## **What To Do** 20 | Iterate over an array of integers given in the function. Modify the _iterate(...)_ function 21 | ``` 22 | public static void iterate(List array) 23 | { 24 | /** 25 | Enter your code in this function 26 | Tips: out.evaluate({content}) has to be used for the program to be success 27 | **/ 28 | } 29 | ``` 30 | **Tips: Search for _iterate through a java list_ on any web searching browser** 31 | 32 | 33 | ## **Sample Input** 34 | ``` 35 | 1 36 | 1 2 3 4 5 37 | ``` 38 | 39 | ## **Sample Output** 40 | ``` 41 | 1 42 | 2 43 | 3 44 | 4 45 | 5 46 | ``` 47 | 48 | ## **Key Takeaways** 49 | - **List<>ArrayList** declaration is compulsory to use Object rather than primitive data types. 50 | 51 | | Primitive Data Type | Object | 52 | | --- | ----------- | 53 | | int | Integer | 54 | | double | Double | 55 | | float | Float | 56 | | boolean | Boolean | 57 | 58 | - List<>ArrayList is a dynamic collection of elements. All elements in the same collection have the same types. 59 | 60 | ## **Above and Beyond** 61 | - How to remove a specified item from an arraylist? 62 | 63 | - How to add another arraylist storing the same type of values? 64 | 65 | - How to replace a value in a specified index of an arraylist? 66 | 67 | - How to get the total sizes of an arraylist? 68 | 69 | - What's the differences between arraylist(List) and a classic array of values (int[]) ? 70 | 71 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex8/metadata/array.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex8/metadata/array.JPG -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex8/metadata/container.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex8/metadata/container.png -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex9/AdvancedForLoop.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.intermediate.ex9; 18 | 19 | import ai.certifai.util.Conversion; 20 | import ai.certifai.util.InputParser; 21 | import ai.certifai.util.OutputParser; 22 | 23 | import java.util.List; 24 | 25 | /** 26 | * Advanced For Loop 27 | * 28 | * @author codenamewei 29 | */ 30 | public class AdvancedForLoop 31 | { 32 | static OutputParser out; 33 | static InputParser in; 34 | 35 | public static void main(String[] args) 36 | { 37 | in = new InputParser(AdvancedForLoop.class); 38 | out = new OutputParser(AdvancedForLoop.class, in); 39 | 40 | int totalUseCases = in.getTotalUseCases(); 41 | 42 | for(int i = 0; i < totalUseCases; ++i) 43 | { 44 | String line = in.getStringInput(); 45 | 46 | List arrayInput = Conversion.StringToListInteger(line); 47 | 48 | int m = arrayInput.get(0); 49 | int n = arrayInput.get(1); 50 | int b = arrayInput.get(2); 51 | 52 | assessArrayValue(m, n, b); 53 | } 54 | 55 | out.printResult(); 56 | } 57 | 58 | ////a_m = a_(m - 1) + 2^(n + m) + b 59 | public static void assessArrayValue(int m, int n, int b) 60 | { 61 | List array = null; 62 | /** 63 | Modify your code in this function 64 | Do the accordingly changes to this function to reach the successful run of the code 65 | **/ 66 | 67 | String output = Conversion.ListIntegerToString(array); 68 | 69 | out.evaluate(output); 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex9/AdvancedForLoop.md: -------------------------------------------------------------------------------- 1 | # Advanced For Loop 2 | Now after you learned about For-Loop and List<>ArrayList. \ 3 | Let's combine these two for an interesting challenge. 4 | 5 | ## **What To Do** 6 | 7 | Input text file will be presented in the form below 8 | - Sample Input File 9 | 10 | For variable **_m, n, b_**, produce output in the form below 11 |

12 | 13 |

14 | 15 | Each value _a_ is calculated with the formula of 16 | 17 |

18 | 19 |

20 | 21 | **Note: asmaller than 0 = 0, always** 22 | 23 | ## **Condition:** 24 | - **_m >= 1_** 25 | - **_n >= 0_** 26 | - **_b >= 0_** 27 | 28 | Iterate over an array of integers given in the function. Modify the _assessArrayValue(...)_ function 29 |

30 | 31 |

32 | 33 | ## **Sample Input** 34 | 2 2 3 \ 35 | Note: m = 2, n = 2, b = 3 36 | 37 | ## **Sample Output** 38 | 7 18 39 | 40 | 41 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/0.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/0.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/1.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/java/ai/certifai/intermediate/ex9/metadata/2.jpg -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/maven/RunMaven.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.maven; 18 | 19 | import ai.certifai.util.PathHandler; 20 | 21 | /** 22 | * Maven 23 | * 24 | * @author codenamewei 25 | */ 26 | public class RunMaven { 27 | public static void main(String[]args) 28 | { 29 | /* 30 | //TODO: Change this into your own image path 31 | String sourceImagePath = "C:\\Users\\chiaw\\Desktop\\images\\chip\\70.jpg"; 32 | 33 | //Check image validity 34 | if(PathHandler.isFileValid(sourceImagePath) == false) 35 | { 36 | System.out.println("Program abort. "); 37 | return; 38 | } 39 | 40 | //Read in image 41 | Mat opencvMat = imread(sourceImagePath); 42 | int w = opencvMat.cols(); 43 | int h = opencvMat.rows(); 44 | int depth = opencvMat.depth(); 45 | 46 | if(depth == 1) 47 | { 48 | System.out.println("Image already is grayscale. Program abort"); 49 | return; 50 | } 51 | 52 | //Create output Mat to store grayscale image 53 | Mat outputImage = new Mat(); 54 | 55 | //Convert the image to grayscale 56 | cvtColor(opencvMat, outputImage, COLOR_RGB2GRAY); 57 | 58 | //Save output image as file 59 | String outputPath = PathHandler.getPathToFile(sourceImagePath) + "_grayscale.png"; 60 | imwrite(outputPath, outputImage); 61 | System.out.println("The image is successfully to Grayscale"); 62 | 63 | 64 | imshow("Color Image", opencvMat); 65 | imshow("Grayscale Image", outputImage); 66 | 67 | //Press "Esc" to close window 68 | if (waitKey(0) == 27) destroyAllWindows(); 69 | */ 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/maven/RunMaven.md: -------------------------------------------------------------------------------- 1 | # Gist of Java with Apache Maven 2 | 3 | ## Chapter 1 Introduction of Apache Maven 4 | 5 | ### 1.1 Installation of Apache Maven :man_technologist: :woman_technologist: 6 | 7 | - Download and install Apache Maven from [here](https://maven.apache.org/download.cgi). 8 | 9 | - Verify the installation through 10 | ``` 11 | mvn -version 12 | ``` 13 |

14 | 15 |

16 | 17 | ### 1.2 What is Apache Maven 18 | 19 | - Apache Maven is a **project management tool** primarily for Java projects. 20 | 21 | - Apache Maven manage a project's build, reporting and documentation from a central piece of information, pom.xml - project object model (POM). 22 | 23 | - This folder covers some of the Maven essentials to manage Java based project in day to day use. 24 | 25 | ### 1.3 Build an Apache Maven Project :man_technologist: :woman_technologist: 26 | 27 | Step 1: Create a new project in Intellij 28 | 29 | - There's two approaches in creating new project. 30 | First of all, open Intellij in your host system. 31 | 32 | 1. (Option 1) Click "Create New Project" in the "Welcome to IntelliJ IDEA" interface. 33 |

34 | 35 |

36 | 37 | 1. (Option 2) If there's an existing project opened, create a new project by going to **File -> New -> Project** 38 |

39 | 40 |

41 | 42 | 2. Choose the archetype **maven-archetype-quickstart** to start with. 43 | :information_source: maven-archetype-quickstart is sample Maven template which provides skeleton structure of Java project. 44 |

45 | 46 |

47 | 48 | 3. Fill up the bottom fields accordingly. 49 | 50 | - **Name**: Name of Project 51 | - Example: 52 | - Name: MyFirstJavaProject 53 | - **Location**: Directory where the project will be created 54 | - Example: 55 | - Location: ~/Desktop/TEMP/MyFirstDL4JProject 56 | - **GroupId**: Reverse domain name of the organization. The purpose of GroupId is to makes the project recognizable across all available projects. 57 | - Example: 58 | - GroupID: ai.certifai 59 | - **ArtifactId**: Name of Artifact. By default same with the name of the project 60 | - Example: 61 | - Name: MyFirstJavaProject 62 | - **Version**: Version of the project. Default value is 1.0-SNAPSHOT 63 | - Example: 64 | - Version: 1.0-SNAPSHOT 65 | 66 |

67 | 68 |

69 | 70 | :information_source: These information can be modified at later phase. 71 | 72 | :information_source: The properties of the project can be double checked in this interface during creating project. 73 |

74 | 75 |

76 | 77 | 78 | ## Chapter 2 Dive in Java with Apache Maven 79 | 80 | - The fundamental component to manage dependencies is by using **pom.xml - project object model (POM)**. 81 | - Simply put, _pom.xml_ is an XML representation of a Maven project with default values of configurations for dependencies name, version and etc. 82 | 83 | ### 2.1 Single-Module Java Project 84 | 85 | - Note: 86 | A module in Java represents a group of closely related packages and resources. 87 | 88 | - With pom.xml, dependency management is easy in defining, creating and maintaining reproducible environments with well-defined classpaths and library versions. 89 | 90 |

91 | 92 |

93 | 94 | - Let's take a look at a bare bone pom.xml. 95 | 96 |

97 | 98 |

99 | 100 | 101 | ### 2.2 Maven Central Repository 102 | 103 | - Maven Central Repository hosted on the cloud. 104 | 105 |

106 | 107 |

108 | 109 | - Maven contains a huge number of commonly used libraries to be used by the community. 110 | - A library in Java is represented as a jar package. 111 | 112 |

113 | 114 |

115 | 116 | ### 2.3 Add dependencies to _my-first-dl4j-project_ :man_technologist: :woman_technologist: 117 | 118 | 1. Search for javacv-platform in [central repository](https://mvnrepository.com/repos/central) 119 |

120 | 121 |

122 | 123 | - Search for javacv-platform 124 | 125 |

126 | 127 |

128 | 129 | - Click into the version desired 130 | 131 |

132 | 133 |

134 | 135 | 2. Copy the code snippet under the _dependencies_ of pom.xml. 136 |

137 | 138 |

139 | 140 | Paste the code snippets in the root pom.xml of your newly build project. 141 | 142 |

143 | 144 |

145 | 146 | 3. Paste these code snippets in the [**App.java**](https://gist.github.com/codenamewei/4bfe8251c2ddfb0e84db2dc3f5a37c9c) 147 | 148 | 4. Reload project 149 |

150 | 151 |

152 | - You can check the folder _.m2_ that the corresponding jar file has been downloaded from central repository. 153 | 154 |

155 | 156 |

157 | 158 | 5. Run the program 159 | 160 | ### How does **2.3** works? 161 | 162 | _.m2_ folder in the host system saved local repositories. 163 | If a particular dependency not found in the folder, Maven would check _.m2_ folder to make sure all dependencies exists locally. 164 | Else, Apache Maven would download the dependency from the cloud by referring to pom.xml. 165 | 166 |

167 | 168 |

169 | 170 | ### 2.4 Multi-Modules Project :man_technologist: :woman_technologist: 171 | 172 | - Multi modules project is more complex compared to single module project. 173 | - There's a root pom.xml for the whole repository and a child pom.xml per module. 174 | - The root pom.xml in the root folder provide information which is leverage in every child module. 175 | 176 |

177 | 178 |

179 | 180 | :question: 181 | How many pom.xml is in the [**TrainingLabs**](https://github.com/CertifaiAI/TrainingLabs.git) repository? 182 | 183 | ### Chapter 3 Useful day-to-day operations with Apache Maven & Intellij :man_technologist: :woman_technologist: 184 | 185 | **Note 1: When importing a Maven project into Intellij, open a new project pointing to the root pom.xml. ** 186 | 187 | Step 1: Import an existing project 188 | 189 | - There's two approaches in importing an existing project. 190 | First of all, open Intellij in your host system. 191 | 192 | 1. (Option 1) Click "Open or Import" in the "Welcome to IntelliJ IDEA" interface. 193 |

194 | 195 |

196 | 197 | 1. (Option 2) If there's an existing project opened, create a new project by going to **File -> New -> Project from Existing Sources** 198 |

199 | 200 |

201 | 202 | 2. Select the root pom.xml of the repository in which intend to open in Intellij. 203 |

204 | 205 |

206 | 207 | **Note 2 When the IDE is not behave like what you are expecting, 208 | one of the few debugging steps an individual can try to do is clear the cache and restart to see if it solves the problem. ** 209 |

210 | 211 |

212 | 213 | **Note 3: The changes in pom.xml will not automatically be reflected when the program is run**. 214 | - Always remember to reload the project once make changes to any of the pom.xml. 215 | 216 | 1. Right click on the repository name. Find **Maven -> Reimport** from the categories. 217 | - In some system, it's **Maven -> Reload project**. Both serves the same purpose. 218 |

219 | 220 |

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development tools are written and developed in Java. 13 | - Building Android Apps is compatible. 14 | - Most of the android applications are written in Java using Google’s Android API. 15 | - Java has a strong development roadmap with continuous progress in security and performance. 16 | 17 | 18 | ### JVM - JDK - JRE 19 | 20 | There are three keywords to familiarize with in Java Environment. 21 | - Java Runtime Environment (JVM) 22 | - Java Development Kit (JDK) 23 | - Java Runtime Environment (JRE) 24 | 25 |

26 | 27 |

28 | 29 | **Java Runtime Environment (JVM)** 30 | A Java virtual machine (JVM) is a virtual machine which provides a portable execution environment for Java-based applications. 31 | 32 | There are two variations of Java Installation 33 | - Java Runtime Environment (JRE) 34 | - Java Development Kit (JDK) 35 | 36 | **Java Runtime Environment (JRE)** 37 | - Software bundle that allows Java Programs to run 38 | - Does not provide development environment. 39 | 40 | **Java Development Kit (JDK)** 41 | - The full-featured SDK for Java 42 | - **JDK includes JRE**, but also the compiler (javac) and tools (like javadoc and jdb). Hence capable of creating and compiling programs. 43 | 44 | Note: 45 | The JRE is smaller than the JDK with the lack of development tools as it require less disk spaces. 46 | 47 | ### Java Development Timeline 48 |

49 | 50 |

51 | 52 | Java 8 is released on 2014 53 | 54 | ### Installation of Java :man_technologist: :woman_technologist: 55 | 56 | Java can be installed from two sources mainly. 57 | - [Oracle Java](https://www.oracle.com/java/technologies/javase-downloads.html) 58 | - [OpenJDK](https://adoptopenjdk.net/installation.html?variant=openjdk8&jvmVariant=hotspot) 59 | 60 | Check if Java is installed fine on your system :man_technologist: :woman_technologist: 61 | ```$xslt 62 | java -version 63 | ``` 64 | 65 |

66 | 67 |

68 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/Config.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | public class Config { 20 | 21 | public static final String OUTPUT_FILE = "output.txt"; 22 | public static final String INPUT_FILE = "input.txt"; 23 | 24 | public static final String WRONG_MSG = "Wrong answers. Try again."; 25 | 26 | public static final String RIGHT_MSG = "Bingo. Challenge solved."; 27 | 28 | } 29 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/Conversion.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import java.util.Arrays; 20 | import java.util.Iterator; 21 | import java.util.List; 22 | import java.util.stream.Collectors; 23 | 24 | public class Conversion { 25 | 26 | public static String ListIntegerToString(List list) 27 | { 28 | if((list == null) || list.isEmpty()) return ""; 29 | 30 | StringBuilder strbul = new StringBuilder(); 31 | Iterator iter = list.iterator(); 32 | while(iter.hasNext()) 33 | { 34 | strbul.append(iter.next()); 35 | if(iter.hasNext()){ 36 | strbul.append(" "); 37 | } 38 | } 39 | return strbul.toString(); 40 | } 41 | 42 | public static List StringToListInteger(String input) 43 | { 44 | return Arrays.stream(input.split(" ")).map(Integer::parseInt).collect(Collectors.toList()); 45 | } 46 | 47 | public static List StringToListString(String input) 48 | { 49 | return Arrays.stream(input.split(" ")).collect(Collectors.toList()); 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/Dashboard.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | 20 | import javax.swing.*; 21 | import java.awt.*; 22 | 23 | public class Dashboard { 24 | 25 | private Font font; 26 | private Integer counter = 1; 27 | private String bufferPass = " "; 28 | private String bufferFail = " "; 29 | private Color foregroundColor = Color.WHITE; 30 | 31 | public Dashboard() 32 | { 33 | font = new Font("SansSerif", Font.BOLD, 20); 34 | } 35 | 36 | public void show(java.util.List listResults) { 37 | 38 | JPanel panel = new JPanel(new SpringLayout()); 39 | for (Boolean result : listResults) 40 | { 41 | JLabel counterLabel = getCounter(); 42 | JTextField textField = getText(result); 43 | 44 | panel.add(counterLabel); 45 | counterLabel.setLabelFor(textField); 46 | panel.add(textField); 47 | } 48 | 49 | SpringUtilities.makeCompactGrid(panel, 50 | listResults.size(), 2, //rows, cols 51 | 6, 6, //initX, initY 52 | 6, 6); //xPad, yPad 53 | 54 | JFrame frame = new JFrame("Result Board"); 55 | frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 56 | 57 | panel.setOpaque(true); 58 | frame.setContentPane(panel); 59 | 60 | frame.setLocationRelativeTo(null); 61 | frame.pack(); 62 | frame.setResizable(false); 63 | frame.setVisible(true); 64 | } 65 | 66 | private JLabel getCounter() 67 | { 68 | JLabel counterLabel = new JLabel((counter++) + ". "); 69 | counterLabel.setFont(font); 70 | counterLabel.setAlignmentX(Component.CENTER_ALIGNMENT); 71 | return counterLabel; 72 | } 73 | 74 | private JTextField getText(Boolean isCorrect) 75 | { 76 | String message; 77 | Color backgroundColor; 78 | 79 | if(isCorrect) 80 | { 81 | message = bufferPass + "PASSED" + bufferPass; 82 | backgroundColor = Color.GREEN; 83 | } 84 | else 85 | { 86 | message = bufferFail + "FAILED" + bufferFail; 87 | backgroundColor = Color.RED; 88 | } 89 | 90 | JTextField field = new JTextField(message); 91 | 92 | field.setFont(font); 93 | field.setForeground(foregroundColor); 94 | field.setBackground(backgroundColor); 95 | field.setAlignmentX(Component.CENTER_ALIGNMENT); 96 | field.setEditable(false); 97 | 98 | return field; 99 | } 100 | 101 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/FileLoader.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import lombok.extern.slf4j.Slf4j; 20 | 21 | import java.io.File; 22 | 23 | /** 24 | * @author codenamewei 25 | */ 26 | @Slf4j 27 | public class FileLoader { 28 | 29 | public static File getOutputLoader(Class class_) 30 | { 31 | try 32 | { 33 | ClassLoader loader = class_.getClassLoader(); 34 | 35 | String resourcePath = class_.getName().replace(".", "/"); 36 | String resourceFile = resourcePath + "/" + Config.OUTPUT_FILE; 37 | 38 | return new File(loader.getResource(resourceFile).getFile()); 39 | } 40 | catch(Exception e) 41 | { 42 | log.info("Error when reading input file: " + e.getMessage()); 43 | } 44 | return null; 45 | } 46 | 47 | public static File getInputLoader(Class class_) 48 | { 49 | ClassLoader loader = class_.getClassLoader(); 50 | 51 | String resourcePath = class_.getName().replace(".", "/"); 52 | String resourceFile = resourcePath + "/" + Config.INPUT_FILE; 53 | 54 | return new File(loader.getResource(resourceFile).getFile()); 55 | } 56 | 57 | public static File getInputLoader(Class class_, String fileName) 58 | { 59 | ClassLoader loader = class_.getClassLoader(); 60 | 61 | String resourcePath = class_.getName().replace(".", "/"); 62 | String resourceFile = resourcePath + "/" + fileName; 63 | 64 | return new File(loader.getResource(resourceFile).getFile()); 65 | } 66 | } 67 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/InputParser.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import lombok.Getter; 20 | import lombok.extern.slf4j.Slf4j; 21 | 22 | import java.io.BufferedReader; 23 | import java.io.File; 24 | import java.io.FileReader; 25 | 26 | /** 27 | * Input parser 28 | * 29 | * @author codenamewei 30 | */ 31 | @Slf4j 32 | public class InputParser { 33 | 34 | private boolean classInit = true; 35 | 36 | private String input; 37 | private BufferedReader br; 38 | 39 | @Getter private int currentUseCase = 1; 40 | 41 | @Getter private int totalUseCases; 42 | @Getter private boolean isMultiLine; 43 | 44 | //multipleLine 45 | private int multiLinesBuffer = 0; 46 | private int currentUseCaseTotalLines = 1; 47 | 48 | public InputParser(Class class_) 49 | { 50 | File file = FileLoader.getInputLoader(class_); 51 | 52 | try 53 | { 54 | br = new BufferedReader(new FileReader(file)); 55 | 56 | String inputBuffer = br.readLine(); 57 | 58 | String[] input = inputBuffer.trim().split("\\s+"); 59 | 60 | if(input.length != 2) 61 | { 62 | log.info("Input text file failed with not 2 input. Program expected to failed"); 63 | } 64 | 65 | totalUseCases = Integer.parseInt(input[0]); 66 | isMultiLine = Boolean.parseBoolean(input[1]); 67 | 68 | if(isMultiLine) 69 | { 70 | currentUseCaseTotalLines = Integer.parseInt(br.readLine()); 71 | } 72 | 73 | } 74 | catch(Exception e) 75 | { 76 | log.info("Error occurs during declare BufferedReader: " + e); 77 | } 78 | } 79 | 80 | private boolean getInputFromFile() 81 | { 82 | try 83 | { 84 | if(!isMultiLine) 85 | { 86 | input = br.readLine(); 87 | 88 | if (input == null) 89 | { 90 | throw new Exception("Single line reader end early. Something wrong"); 91 | } 92 | else 93 | { 94 | singleLineAddUseCase(); 95 | } 96 | } 97 | else 98 | { 99 | if (multiLinesBuffer < currentUseCaseTotalLines) 100 | { 101 | try 102 | { 103 | input = br.readLine(); 104 | 105 | if (input == null) 106 | { 107 | throw new Exception("Multi line reader end early. Something wrong"); 108 | } 109 | else 110 | { 111 | ++multiLinesBuffer; 112 | } 113 | } 114 | catch (Exception e) 115 | { 116 | log.info(e.getMessage()); 117 | } 118 | } 119 | else { 120 | return false; 121 | } 122 | } 123 | } 124 | catch(Exception e) 125 | { 126 | log.info(e.getMessage()); 127 | return false; 128 | } 129 | 130 | return true; 131 | } 132 | 133 | 134 | private void flushLine(int numTimes) 135 | { 136 | try { 137 | if (numTimes < 0) 138 | { 139 | log.info("Flush line from negative values. "); 140 | } 141 | 142 | for(int i = 0; i < numTimes; ++i) 143 | { 144 | if(br.readLine() == null) 145 | { 146 | log.info("BufferedReader null while flushing line"); 147 | } 148 | } 149 | } 150 | catch(Exception e) 151 | { 152 | log.info(e.getMessage()); 153 | } 154 | } 155 | 156 | public String getStringInput() 157 | { 158 | if(getInputFromFile()) 159 | { 160 | return input; 161 | } 162 | else 163 | { 164 | return "-1"; 165 | } 166 | } 167 | 168 | public int getIntegerInput() 169 | { 170 | try 171 | { 172 | if(getInputFromFile()) 173 | { 174 | return Integer.parseInt(input); 175 | } 176 | } 177 | catch(Exception e) 178 | { 179 | log.info("Input cannot parse to integer", e.getMessage()); 180 | } 181 | 182 | return -1; 183 | } 184 | 185 | public double getDoubleInput() 186 | { 187 | try 188 | { 189 | if(getInputFromFile()) 190 | { 191 | return Double.parseDouble(input); 192 | } 193 | } 194 | catch(Exception e) 195 | { 196 | log.info("Input cannot parse to double", e.getMessage()); 197 | } 198 | 199 | return -1D; 200 | } 201 | 202 | public float getFloatInput() 203 | { 204 | try 205 | { 206 | if(getInputFromFile()) 207 | { 208 | return Float.parseFloat(input); 209 | } 210 | } 211 | catch(Exception e) 212 | { 213 | log.info("Input cannot parse to float", e.getMessage()); 214 | } 215 | 216 | return -1F; 217 | } 218 | 219 | private void singleLineAddUseCase() 220 | { 221 | if(currentUseCase < totalUseCases) ++currentUseCase; 222 | } 223 | 224 | public int getCurrentUseCaseTotalLines() 225 | { 226 | if (currentUseCase >= totalUseCases) 227 | { 228 | log.info("Use Case ended. No more valid input"); 229 | 230 | return 0; 231 | } 232 | 233 | if((!isMultiLine) && (currentUseCase < totalUseCases)) 234 | { 235 | ++currentUseCase; 236 | } 237 | else if(!classInit) 238 | { 239 | try 240 | { 241 | flushLine(currentUseCaseTotalLines - multiLinesBuffer); 242 | multiLinesBuffer = 0; 243 | 244 | String buffer; 245 | if((buffer = br.readLine()) == null) 246 | { 247 | log.info("Retriving number of total lines for current use case is null"); 248 | 249 | return 0; 250 | } 251 | else 252 | { 253 | currentUseCaseTotalLines = Integer.parseInt(buffer); 254 | singleLineAddUseCase(); 255 | } 256 | 257 | } 258 | catch(Exception e) 259 | { 260 | log.info(e.getMessage()); 261 | } 262 | } 263 | else 264 | { 265 | classInit = false; 266 | } 267 | 268 | return currentUseCaseTotalLines; 269 | } 270 | } 271 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/OutputParser.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import lombok.Getter; 20 | import lombok.extern.slf4j.Slf4j; 21 | 22 | import java.io.BufferedReader; 23 | import java.io.File; 24 | import java.io.FileReader; 25 | import java.io.IOException; 26 | import java.util.ArrayList; 27 | import java.util.List; 28 | 29 | /** 30 | * Output parser 31 | * 32 | * @author codenamewei 33 | */ 34 | @Slf4j 35 | public class OutputParser 36 | { 37 | private BufferedReader br; 38 | private InputParser in; 39 | 40 | private int currentUseCase = 1; 41 | 42 | @Getter private int totalUseCases; 43 | 44 | //multipleLine 45 | private boolean isMultiLine; 46 | 47 | private int multiLinesBuffer = 1; 48 | private int currentUseCaseTotalLines = 1; //default 1 line if not multi lines 49 | private boolean isCurrentUseCaseFalse = false; //if true, the rest of multi lines of this use case will not change the output 50 | 51 | private List results; //results of size totalUseCases after evaluation 52 | 53 | public OutputParser(Class class_) 54 | { 55 | this(class_, null); 56 | } 57 | 58 | public OutputParser(Class class_, InputParser inputParser) 59 | { 60 | File file = FileLoader.getOutputLoader(class_); 61 | in = inputParser; 62 | 63 | try 64 | { 65 | br = new BufferedReader(new FileReader(file)); 66 | 67 | String inputBuffer = br.readLine(); 68 | 69 | String[] output = inputBuffer.trim().split("\\s+"); 70 | 71 | if(output.length != 2) 72 | { 73 | String paramErrorMessage = "output text file failed with not 2 output. Program expected to failed"; 74 | 75 | throw new IOException(paramErrorMessage); 76 | } 77 | 78 | totalUseCases = Integer.parseInt(output[0]); 79 | isMultiLine = Boolean.parseBoolean(output[1]); 80 | 81 | if((in != null) && (totalUseCases != in.getTotalUseCases())) 82 | { 83 | String useCaseNotAligned = "Input use cases != output use cases. Program not able to work fine"; 84 | 85 | throw new IOException(useCaseNotAligned); 86 | } 87 | 88 | results = new ArrayList<>(); 89 | 90 | if(isMultiLine) 91 | { 92 | currentUseCaseTotalLines = Integer.parseInt(br.readLine()); 93 | } 94 | 95 | } 96 | catch(Exception e) 97 | { 98 | log.info("Error occurs during declare BufferedReader: " + e.getMessage()); 99 | } 100 | } 101 | 102 | private void flushLine(int numTimes) 103 | { 104 | try { 105 | if (numTimes < 0) 106 | { 107 | log.info("Flush line from negative values. "); 108 | } 109 | 110 | for(int i = 0; i < numTimes; ++i) 111 | { 112 | if(br.readLine() == null) 113 | { 114 | log.info("BufferedReader null while flushing line"); 115 | } 116 | } 117 | } 118 | catch(Exception e) 119 | { 120 | log.info(e.getMessage()); 121 | } 122 | } 123 | 124 | private void flushUseCase(int numOfUseCase) 125 | { 126 | if(numOfUseCase == 0) return; 127 | 128 | try 129 | { 130 | for(int i = 0; i < numOfUseCase; ++i) 131 | { 132 | if(isMultiLine) flushLine(currentUseCaseTotalLines - multiLinesBuffer + 1); 133 | 134 | String buffer = br.readLine(); 135 | if(buffer == null) 136 | { 137 | throw new IOException("Retriving number of total lines for current use case is null"); 138 | 139 | } 140 | else 141 | { 142 | if(isMultiLine) 143 | { 144 | currentUseCaseTotalLines = Integer.parseInt(buffer); 145 | multiLinesBuffer = 1; 146 | resultsAddValueIfValid(false); 147 | } 148 | else 149 | { 150 | resultsAddValueIfValid(false); 151 | } 152 | ++currentUseCase; 153 | } 154 | 155 | } 156 | multiLinesBuffer = 1; //? 157 | 158 | if((in != null) && (currentUseCase != in.getCurrentUseCase())) 159 | { 160 | throw new Exception("Output use case index != input use case index"); 161 | } 162 | 163 | } 164 | catch(Exception e) 165 | { 166 | log.info(e.getMessage()); 167 | } 168 | 169 | } 170 | 171 | private void resultsAddValueIfValid(boolean state) 172 | { 173 | if(results.size() < totalUseCases) 174 | { 175 | results.add(state); 176 | } 177 | else 178 | { 179 | log.info("Results size is more than total use cases. State not saved"); 180 | } 181 | } 182 | 183 | private boolean getResult(Object input) 184 | { 185 | boolean bResult = false; 186 | 187 | if(input instanceof String) 188 | { 189 | bResult = compareString((String) input); 190 | } 191 | else if(input instanceof Integer) 192 | { 193 | bResult = compareInteger((Integer) input); 194 | } 195 | else if(input instanceof Float) 196 | { 197 | bResult = compareFloat((Float) input); 198 | } 199 | else if(input instanceof Boolean) 200 | { 201 | bResult = compareBoolean((Boolean) input); 202 | } 203 | 204 | 205 | return bResult; 206 | } 207 | 208 | public void evaluate(Object input) 209 | { 210 | try 211 | { 212 | if(isMultiLine) 213 | { 214 | if(in == null) 215 | { 216 | throw new Exception("Input parse is null. Program cant function well"); 217 | } 218 | 219 | if(in.getCurrentUseCase() > totalUseCases) 220 | { 221 | return; // use case ended do nothing 222 | } 223 | 224 | if(in.isMultiLine()) 225 | { 226 | if(in.getCurrentUseCase() > currentUseCase) 227 | { 228 | flushUseCase(in.getCurrentUseCase() - currentUseCase); 229 | } 230 | else if(in.getCurrentUseCase() < currentUseCase) 231 | { 232 | results.remove(results.size() - 1); 233 | results.add(false); 234 | } 235 | } 236 | 237 | if(multiLinesBuffer > currentUseCaseTotalLines) 238 | { 239 | results.remove(results.size() - 1); 240 | results.add(false); 241 | } 242 | else 243 | { 244 | if((!isCurrentUseCaseFalse) && (!getResult(input))) 245 | { 246 | isCurrentUseCaseFalse = true; 247 | } 248 | 249 | ++multiLinesBuffer; 250 | 251 | if(multiLinesBuffer == (currentUseCaseTotalLines + 1) ) 252 | { 253 | resultsAddValueIfValid(!isCurrentUseCaseFalse); 254 | 255 | ++currentUseCase; 256 | 257 | if(currentUseCase <= totalUseCases) 258 | { 259 | String nextTotalLines = br.readLine(); 260 | 261 | if (nextTotalLines == null) 262 | { 263 | log.info("Output line reader end early. Something wrong"); 264 | } 265 | else 266 | { 267 | currentUseCaseTotalLines = Integer.parseInt(nextTotalLines); 268 | multiLinesBuffer = 1; 269 | } 270 | } 271 | } 272 | } 273 | } 274 | else 275 | { 276 | flushSingleLineUseCase(); 277 | resultsAddValueIfValid(getResult(input)); 278 | 279 | ++currentUseCase; 280 | 281 | } 282 | } 283 | catch(Exception e) 284 | { 285 | log.info("Error: " + e.getMessage()); 286 | } 287 | 288 | } 289 | 290 | private void flushSingleLineUseCase() 291 | { 292 | if(in == null) return; 293 | 294 | if( (currentUseCase != totalUseCases) && (in.getCurrentUseCase() > (currentUseCase + 1))) 295 | { 296 | int numOfUseCaseToFlush = in.getCurrentUseCase() - currentUseCase - 1; 297 | 298 | flushUseCase(numOfUseCaseToFlush); 299 | } 300 | } 301 | 302 | 303 | private boolean compareString(String input) 304 | { 305 | String trueOutput = getTrueOutput(); 306 | 307 | return trueOutput.equals(input); 308 | } 309 | 310 | 311 | private boolean compareInteger(Integer input) 312 | { 313 | String trueOutput = getTrueOutput(); 314 | 315 | return input.equals(Integer.parseInt(trueOutput)); 316 | } 317 | 318 | private boolean compareFloat(Float input) 319 | { 320 | String trueOutput = getTrueOutput(); 321 | 322 | return input.equals(Float.parseFloat(trueOutput)); 323 | } 324 | 325 | private boolean compareBoolean(Boolean input) 326 | { 327 | String trueOutput = getTrueOutput(); 328 | 329 | return input == Boolean.parseBoolean(trueOutput); 330 | } 331 | 332 | private String getTrueOutput() { 333 | 334 | String outputBuffer = ""; 335 | 336 | try 337 | { 338 | outputBuffer = br.readLine(); 339 | 340 | if (outputBuffer == null) 341 | { 342 | log.info("Output line reader end early. Something wrong"); 343 | } 344 | } 345 | catch(Exception e) 346 | { 347 | log.info(e.getMessage()); 348 | } 349 | 350 | return outputBuffer; 351 | 352 | } 353 | 354 | 355 | public void printResult() 356 | { 357 | if (currentUseCase <= totalUseCases) 358 | { 359 | int numOfUseCasesSkip = totalUseCases - currentUseCase + 1; 360 | 361 | for (int i = 0; i < numOfUseCasesSkip; ++i) { 362 | resultsAddValueIfValid(false); 363 | } 364 | } 365 | else if(isMultiLine && (currentUseCase == totalUseCases) && (multiLinesBuffer <= currentUseCaseTotalLines)) 366 | { 367 | resultsAddValueIfValid(false); 368 | } 369 | 370 | new Dashboard().show(results); 371 | } 372 | } 373 | -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/PathHandler.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import java.io.File; 20 | 21 | public class PathHandler { 22 | 23 | public static String getPathToFile(String pathName) { 24 | String[] subString = pathName.split("/"); 25 | String fullPathName = subString[subString.length - 1]; 26 | 27 | String[] separator = fullPathName.split("\\."); 28 | 29 | int fileEndIndex = fullPathName.length() - separator[(separator.length - 1)].length() - 1; 30 | String fileName = fullPathName.substring(0, fileEndIndex); 31 | 32 | Integer pathLength = pathName.length() - fullPathName.length(); 33 | String pathToSave = pathName.substring(0, pathLength); 34 | 35 | fileName = fileName.replace(".", "_"); //replace any possible "." with "_" 36 | fileName = fileName.replace(" ", ""); //replace any possible " " with "" 37 | 38 | String pathFirstHalf = pathToSave + fileName; 39 | 40 | return pathFirstHalf; 41 | } 42 | 43 | public static Boolean isFileValid(String pathName) { 44 | 45 | try { 46 | File fileImagePath = new File(pathName); 47 | 48 | if (fileImagePath.exists() == false) { 49 | System.out.println("File did not exist"); 50 | return false; 51 | } 52 | } catch (Exception e) { 53 | System.out.println("Error happened when reading in image."); 54 | e.printStackTrace(); 55 | return false; 56 | } 57 | 58 | return true; 59 | } 60 | } -------------------------------------------------------------------------------- /java-core/src/main/java/ai/certifai/util/SpringUtilities.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (c) 2020-2021 CertifAI Sdn. Bhd. 3 | * 4 | * This program is part of OSRFramework. You can redistribute it and/or modify 5 | * it under the terms of the GNU Affero General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or 7 | * (at your option) any later version. You should have received a copy of the 8 | * GNU Affero General Public License along with this program. If not, see 9 | * 10 | * https://www.gnu.org/licenses/agpl-3.0 11 | * 12 | * This program is distributed in the hope that it will be useful, 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | * GNU Affero General Public License for more details. 16 | */ 17 | package ai.certifai.util; 18 | 19 | import javax.swing.*; 20 | import java.awt.*; 21 | 22 | /** 23 | * A 1.4 file that provides utility methods for 24 | * creating form- or grid-style layouts with SpringLayout. 25 | * These utilities are used by several programs, such as 26 | * SpringBox and SpringCompactGrid. 27 | */ 28 | public class SpringUtilities { 29 | /** 30 | * A debugging utility that prints to stdout the component's 31 | * minimum, preferred, and maximum sizes. 32 | */ 33 | public static void printSizes(Component c) { 34 | System.out.println("minimumSize = " + c.getMinimumSize()); 35 | System.out.println("preferredSize = " + c.getPreferredSize()); 36 | System.out.println("maximumSize = " + c.getMaximumSize()); 37 | } 38 | 39 | /** 40 | * Aligns the first rows * cols 41 | * components of parent in 42 | * a grid. Each component is as big as the maximum 43 | * preferred width and height of the components. 44 | * The parent is made just big enough to fit them all. 45 | * 46 | * @param rows number of rows 47 | * @param cols number of columns 48 | * @param initialX x location to start the grid at 49 | * @param initialY y location to start the grid at 50 | * @param xPad x padding between cells 51 | * @param yPad y padding between cells 52 | */ 53 | public static void makeGrid(Container parent, 54 | int rows, int cols, 55 | int initialX, int initialY, 56 | int xPad, int yPad) { 57 | SpringLayout layout; 58 | try { 59 | layout = (SpringLayout)parent.getLayout(); 60 | } catch (ClassCastException exc) { 61 | System.err.println("The first argument to makeGrid must use SpringLayout."); 62 | return; 63 | } 64 | 65 | Spring xPadSpring = Spring.constant(xPad); 66 | Spring yPadSpring = Spring.constant(yPad); 67 | Spring initialXSpring = Spring.constant(initialX); 68 | Spring initialYSpring = Spring.constant(initialY); 69 | int max = rows * cols; 70 | 71 | //Calculate Springs that are the max of the width/height so that all 72 | //cells have the same size. 73 | Spring maxWidthSpring = layout.getConstraints(parent.getComponent(0)). 74 | getWidth(); 75 | Spring maxHeightSpring = layout.getConstraints(parent.getComponent(0)). 76 | getHeight(); 77 | for (int i = 1; i < max; i++) { 78 | SpringLayout.Constraints cons = layout.getConstraints( 79 | parent.getComponent(i)); 80 | 81 | maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth()); 82 | maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight()); 83 | } 84 | 85 | //Apply the new width/height Spring. This forces all the 86 | //components to have the same size. 87 | for (int i = 0; i < max; i++) { 88 | SpringLayout.Constraints cons = layout.getConstraints( 89 | parent.getComponent(i)); 90 | 91 | cons.setWidth(maxWidthSpring); 92 | cons.setHeight(maxHeightSpring); 93 | } 94 | 95 | //Then adjust the x/y constraints of all the cells so that they 96 | //are aligned in a grid. 97 | SpringLayout.Constraints lastCons = null; 98 | SpringLayout.Constraints lastRowCons = null; 99 | for (int i = 0; i < max; i++) { 100 | SpringLayout.Constraints cons = layout.getConstraints( 101 | parent.getComponent(i)); 102 | if (i % cols == 0) { //start of new row 103 | lastRowCons = lastCons; 104 | cons.setX(initialXSpring); 105 | } else { //x position depends on previous component 106 | cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST), 107 | xPadSpring)); 108 | } 109 | 110 | if (i / cols == 0) { //first row 111 | cons.setY(initialYSpring); 112 | } else { //y position depends on previous row 113 | cons.setY(Spring.sum(lastRowCons.getConstraint(SpringLayout.SOUTH), 114 | yPadSpring)); 115 | } 116 | lastCons = cons; 117 | } 118 | 119 | //Set the parent's size. 120 | SpringLayout.Constraints pCons = layout.getConstraints(parent); 121 | pCons.setConstraint(SpringLayout.SOUTH, 122 | Spring.sum( 123 | Spring.constant(yPad), 124 | lastCons.getConstraint(SpringLayout.SOUTH))); 125 | pCons.setConstraint(SpringLayout.EAST, 126 | Spring.sum( 127 | Spring.constant(xPad), 128 | lastCons.getConstraint(SpringLayout.EAST))); 129 | } 130 | 131 | /* Used by makeCompactGrid. */ 132 | private static SpringLayout.Constraints getConstraintsForCell( 133 | int row, int col, 134 | Container parent, 135 | int cols) { 136 | SpringLayout layout = (SpringLayout) parent.getLayout(); 137 | Component c = parent.getComponent(row * cols + col); 138 | return layout.getConstraints(c); 139 | } 140 | 141 | /** 142 | * Aligns the first rows * cols 143 | * components of parent in 144 | * a grid. Each component in a column is as wide as the maximum 145 | * preferred width of the components in that column; 146 | * height is similarly determined for each row. 147 | * The parent is made just big enough to fit them all. 148 | * 149 | * @param rows number of rows 150 | * @param cols number of columns 151 | * @param initialX x location to start the grid at 152 | * @param initialY y location to start the grid at 153 | * @param xPad x padding between cells 154 | * @param yPad y padding between cells 155 | */ 156 | public static void makeCompactGrid(Container parent, 157 | int rows, int cols, 158 | int initialX, int initialY, 159 | int xPad, int yPad) { 160 | SpringLayout layout; 161 | try { 162 | layout = (SpringLayout)parent.getLayout(); 163 | } catch (ClassCastException exc) { 164 | System.err.println("The first argument to makeCompactGrid must use SpringLayout."); 165 | return; 166 | } 167 | 168 | //Align all cells in each column and make them the same width. 169 | Spring x = Spring.constant(initialX); 170 | for (int c = 0; c < cols; c++) { 171 | Spring width = Spring.constant(0); 172 | for (int r = 0; r < rows; r++) { 173 | width = Spring.max(width, 174 | getConstraintsForCell(r, c, parent, cols). 175 | getWidth()); 176 | } 177 | for (int r = 0; r < rows; r++) { 178 | SpringLayout.Constraints constraints = 179 | getConstraintsForCell(r, c, parent, cols); 180 | constraints.setX(x); 181 | constraints.setWidth(width); 182 | } 183 | x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad))); 184 | } 185 | 186 | //Align all cells in each row and make them the same height. 187 | Spring y = Spring.constant(initialY); 188 | for (int r = 0; r < rows; r++) { 189 | Spring height = Spring.constant(0); 190 | for (int c = 0; c < cols; c++) { 191 | height = Spring.max(height, 192 | getConstraintsForCell(r, c, parent, cols). 193 | getHeight()); 194 | } 195 | for (int c = 0; c < cols; c++) { 196 | SpringLayout.Constraints constraints = 197 | getConstraintsForCell(r, c, parent, cols); 198 | constraints.setY(y); 199 | constraints.setHeight(height); 200 | } 201 | y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad))); 202 | } 203 | 204 | //Set the parent's size. 205 | SpringLayout.Constraints pCons = layout.getConstraints(parent); 206 | pCons.setConstraint(SpringLayout.SOUTH, y); 207 | pCons.setConstraint(SpringLayout.EAST, x); 208 | } 209 | } -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex1/HelloWorld/output.txt: -------------------------------------------------------------------------------- 1 | 1 false 2 | Hello World! -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex2/PackagingIntro/output.txt: -------------------------------------------------------------------------------- 1 | 1 false 2 | Package Name = ai.certifai.basic.ex2.PackagingIntro -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex3/BluePrint/input.txt: -------------------------------------------------------------------------------- 1 | 1 true 2 | 3 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex3/BluePrint/output.txt: -------------------------------------------------------------------------------- 1 | 1 true 2 | 3 3 | Name: John Doe 4 | Height: 165 5 | Width: 100 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex5/If_ElseIf_Else/input.txt: -------------------------------------------------------------------------------- 1 | 11 false 2 | 2 3 | 50 4 | 0 5 | 1000 6 | 10001 7 | 121 8 | 6 9 | 1000000 10 | 5 11 | 87 12 | 101 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex5/If_ElseIf_Else/output.txt: -------------------------------------------------------------------------------- 1 | 11 false 2 | Even 3 | Special 4 | Even 5 | Even 6 | Out of Range 7 | Odd 8 | Even 9 | Out of Range 10 | Odd 11 | Special 12 | Odd -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex6/DataTypes/input.txt: -------------------------------------------------------------------------------- 1 | 1 true 2 | 4 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex6/DataTypes/output.txt: -------------------------------------------------------------------------------- 1 | 1 true 2 | 4 3 | Nasi Lemak! 4 | 20 5 | 100.054 6 | true -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex7/ForLoop/input.txt: -------------------------------------------------------------------------------- 1 | 4 true 2 | 4 3 | Manchester United 4 | Real Madrid 5 | Liverpool 6 | Barcelona 7 | 7 8 | ********* ********* ********* ********* ********* ********* ***** ********* 9 | ********* ********* ** ** ********* ********* ********* ********* ********* 10 | *** *** ** ** *** *** *** *** *** *** 11 | *** ********* ********* *** *** ********* *** *** *** 12 | *** *** ******* *** *** ********* ********* *** 13 | ********* ********* *** *** *** ********* *** *** *** ********* 14 | ********* ********* *** *** *** ********* *** *** *** ********* 15 | 3 16 | Just 17 | Do 18 | It! 19 | 1 20 | no -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/basic/ex7/ForLoop/output.txt: -------------------------------------------------------------------------------- 1 | 4 true 2 | 4 3 | Manchester United 4 | Real Madrid 5 | Liverpool 6 | Barcelona 7 | 7 8 | ********* ********* ********* ********* ********* ********* ***** ********* 9 | ********* ********* ** ** ********* ********* ********* ********* ********* 10 | *** *** ** ** *** *** *** *** *** *** 11 | *** ********* ********* *** *** ********* *** *** *** 12 | *** *** ******* *** *** ********* ********* *** 13 | ********* ********* *** *** *** ********* *** *** *** ********* 14 | ********* ********* *** *** *** ********* *** *** *** ********* 15 | 3 16 | Just 17 | Do 18 | It! 19 | 1 20 | no -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex10/ExceptionHandling/output.txt: -------------------------------------------------------------------------------- 1 | 3 false 2 | java.io.FileNotFoundException 3 | java.lang.ArithmeticException 4 | java.lang.NullPointerException -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/1.txt: -------------------------------------------------------------------------------- 1 | true 2 | true 3 | true 4 | false 5 | false 6 | false -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/2.txt: -------------------------------------------------------------------------------- 1 | Sep 09, 2020 05:47:51 PM 2 | Sep 09, 2020 05:47:52 PM 3 | Sep 09, 2020 05:47:53 PM 4 | Sep 09, 2020 05:47:53 PM 5 | Sep 09, 2020 05:47:56 PM 6 | Sep 09, 2020 05:47:56 PM 7 | Sep 09, 2020 05:48:07 PM -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/3.txt: -------------------------------------------------------------------------------- 1 | Designed and Developed various mechanical and structural parts for global TV market from concept to launch. -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/4.txt: -------------------------------------------------------------------------------- 1 | Try the cloud-native development solutions from Red Hat, 2 | and experience how you can build apps more efficiently and deliver faster! 3 | Get the e-book here. 4 | Make growth happen with AI that works for you! -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/5.txt: -------------------------------------------------------------------------------- 1 | Caused by: org.hsqldb.HsqlException: user lacks privilege or object not found: PROJECTNAME 2 | at org.hsqldb.error.Error.error(Unknown Source) 3 | at org.hsqldb.error.Error.error(Unknown Source) 4 | at org.hsqldb.ExpressionColumn.checkColumnsResolved(Unknown Source) 5 | at org.hsqldb.QueryExpression.resolve(Unknown Source) 6 | at org.hsqldb.ParserDQL.compileCursorSpecification(Unknown Source) 7 | at org.hsqldb.ParserCommand.compilePart(Unknown Source) 8 | at org.hsqldb.ParserCommand.compileStatement(Unknown Source) 9 | at org.hsqldb.Session.compileStatement(Unknown Source) 10 | at org.hsqldb.StatementManager.compile(Unknown Source) 11 | at org.hsqldb.Session.execute(Unknown Source) 12 | ... 13 common frames omitted -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/6.txt: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/6.txt -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/7.txt: -------------------------------------------------------------------------------- 1 | Meaning of text in English: 2 | 3 | 4 | text 5 | Pronunciation /tɛkst/ 6 | Translate text into Spanish 7 | 8 | NOUN 9 | 1A book or other written or printed work, regarded in terms of its content rather than its physical form. 10 | 11 | ‘a text which explores pain and grief’ 12 | More example sentencesSynonyms 13 | 1.1A piece of written or printed material regarded as conveying the authentic or primary form of a particular work. 14 | ‘in some passages it is difficult to establish the original text’ 15 | More example sentences 16 | 1.2mass noun Written or printed words, typically forming a connected piece of work. 17 | ‘stylistic features of journalistic text’ 18 | More example sentences 19 | 1.3Computing mass noun Data in the form of words or alphabetic characters. 20 | ‘For my purposes, clearly displaying a lot of text at relatively small font sizes is the most important thing I want a monitor to do.’ 21 | More example sentences 22 | 2in singular The main body of a book or other piece of writing, as distinct from other material such as notes, appendices, and illustrations. 23 | 24 | ‘the pictures are clear and relate well to the text’ 25 | More example sentencesSynonyms 26 | 2.1A script or libretto. 27 | ‘There are laughs to be had from the updated text, and Shakespeare's basic story is as entertaining as ever.’ 28 | More example sentencesSynonyms 29 | 3A written work chosen or set as a subject of study. 30 | 31 | ‘too much concentration on set texts can turn pupils against reading’ 32 | More example sentences 33 | 3.1A textbook. 34 | ‘an organic chemistry text’ 35 | More example sentencesSynonyms 36 | 3.2A passage from the Bible or other religious work, especially when used as the subject of a sermon. 37 | ‘The first is that all the readings of texts and the sermons have been provided by biblical specialists, attempting to read theologically.’ 38 | More example sentencesSynonyms 39 | 3.3A subject or theme for a discussion or exposition. 40 | ‘he took as his text the fact that Australia is paradise’ 41 | More example sentencesSynonyms 42 | 4A text message. 43 | 44 | ‘just give us a call or send us a text’ 45 | More example sentences 46 | 5 47 | 48 | (also text-hand) 49 | mass noun Fine, large handwriting, used especially for manuscripts. 50 | VERB 51 | [WITH OBJECT] 52 | Send (someone) a text message. 53 | 54 | ‘if she was going to go she would have texted us’ 55 | More example sentences 56 | Origin 57 | Late Middle English from Old Northern French texte, from Latin textus ‘tissue, literary style’ (in medieval Latin, ‘Gospel’), from text- ‘woven’, from the verb texere. -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/input.txt: -------------------------------------------------------------------------------- 1 | 7 false 2 | 1.txt 3 | 2.txt 4 | 3.txt 5 | 4.txt 6 | 5.txt 7 | 6.txt 8 | 7.txt -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex11/WhileLoop/output.txt: -------------------------------------------------------------------------------- 1 | 7 false 2 | 6 3 | 7 4 | 1 5 | 4 6 | 12 7 | 0 8 | 57 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex12/MapImp/input.txt: -------------------------------------------------------------------------------- 1 | 10 false 2 | get Italy 3 | delete Tuvalu 4 | add Tuvalu 688 5 | add Singapore 65 6 | get Singapore 7 | delete Singapore 8 | get Malaysia 9 | get Romania 10 | delete Uganda 11 | get Uganda -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex12/MapImp/output.txt: -------------------------------------------------------------------------------- 1 | 10 false 2 | 39 3 | False 4 | True 5 | False 6 | 65 7 | True 8 | 60 9 | False 10 | False 11 | False -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex13/SubString/input.txt: -------------------------------------------------------------------------------- 1 | 11 false 2 | debug.log 3 | Image from iOS (2).jpg 4 | Capture.PNG 5 | Screenshot 2020-09-17 204314.jpg 6 | Classifai_WelcomeHandler_A 7 | chrome-linux.zip 8 | Classifai_Favicon_Light_BG.ico 9 | Certifai Milo Poster.png 10 | a 11 | The Data Engineering Cookbook.pdf 12 | NLP -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex13/SubString/output.txt: -------------------------------------------------------------------------------- 1 | 11 false 2 | log 3 | jpg 4 | PNG 5 | jpg 6 | It's not a file! 7 | zip 8 | ico 9 | png 10 | It's not a file! 11 | pdf 12 | It's not a file! -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex14/AdvancedSubString/input.txt: -------------------------------------------------------------------------------- 1 | 12 false 2 | java-fundamentals 3 | Image from iOS (2).jpg 4 | Capture.PNG 5 | Screenshot 2020-09-17 204314.jpg 6 | Classifai_WelcomeHandler_A 7 | Custom Office Templates 8 | c 9 | Certifai Milo Poster.png 10 | 1 11 | The Data Engineering Cookbook.pdf 12 | Quick Access 13 | a b c -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex14/AdvancedSubString/output.txt: -------------------------------------------------------------------------------- 1 | 12 false 2 | java-fundamentals 3 | Image_from_iOS_(2) 4 | Capture 5 | Screenshot_2020-09-17_204314 6 | Classifai_WelcomeHandler_A 7 | Custom_Office_Templates 8 | c 9 | Certifai_Milo_Poster 10 | 1 11 | The_Data_Engineering_Cookbook 12 | Quick_Access 13 | a_b_c -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex15/QuickSortImp/input.txt: -------------------------------------------------------------------------------- 1 | 7 false 2 | 10 7 8 23 1 52 3 | 1001 1050 1031 4 | 1 4 5 1 56 90 9 5 | 9 4 5 6 11244 466 1245 10 6 | 234 123 7 | 0 8 | 12 7 80 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex15/QuickSortImp/output.txt: -------------------------------------------------------------------------------- 1 | 7 false 2 | 1 7 8 10 23 52 3 | 1001 1031 1050 4 | 1 1 4 5 9 56 90 5 | 4 5 6 9 10 466 1245 11244 6 | 123 234 7 | 0 8 | 7 12 80 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex8/OrderedCollection/input.txt: -------------------------------------------------------------------------------- 1 | 5 false 2 | 2 2 3 3 | 4 6 1 4 | 1 0 5 | 10 6 | 15 2 500 4 1000 5 6 7 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex8/OrderedCollection/output.txt: -------------------------------------------------------------------------------- 1 | 5 true 2 | 3 3 | 2 4 | 2 5 | 3 6 | 3 7 | 4 8 | 6 9 | 1 10 | 2 11 | 1 12 | 0 13 | 1 14 | 10 15 | 8 16 | 15 17 | 2 18 | 500 19 | 4 20 | 1000 21 | 5 22 | 6 23 | 7 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex9/AdvancedForLoop/input.txt: -------------------------------------------------------------------------------- 1 | 5 false 2 | 2 2 3 3 | 4 6 1 4 | 1 0 5 5 | 10 1 1 6 | 15 2 500 -------------------------------------------------------------------------------- /java-core/src/main/resources/ai/certifai/intermediate/ex9/AdvancedForLoop/output.txt: -------------------------------------------------------------------------------- 1 | 5 false 2 | 7 18 3 | 65 194 451 964 4 | 6 5 | 3 8 17 34 67 132 261 518 1031 2056 6 | 504 1012 1528 2060 2624 3252 4008 5020 6544 9092 13688 22380 39264 72532 138568 -------------------------------------------------------------------------------- /java-core/src/main/resources/solutionStructureGuidance.md: -------------------------------------------------------------------------------- 1 | # input file (multiline == true) 2 | number of use case, multiline 3 | num of lines for use case 0 4 | .. 5 | num of lines for use case 1 6 | .. 7 | 8 | # input file (multiline == false) 9 | number of use case, multiline 10 | question use case 0 11 | question use case 1 12 | .. 13 | 14 | # output file 15 | number of use case, multiline(true) 16 | number of lines of use case 0 17 | ans 0 use case 0 18 | ans 0 use case 1 19 | .. 20 | number of lines of use case 1 21 | ans 1 use case 0 22 | ans 1 use case 1 23 | .. 24 | 25 | # output file (if input multiline == false) 26 | number of use case, multiline(false) 27 | ans use case 0 28 | ans use case 1 29 | .. -------------------------------------------------------------------------------- /metadata/codeSample.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/metadata/codeSample.JPG -------------------------------------------------------------------------------- /metadata/dashboard.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/metadata/dashboard.jpg -------------------------------------------------------------------------------- /metadata/fileStructure.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/metadata/fileStructure.jpg -------------------------------------------------------------------------------- /metadata/head.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/metadata/head.gif -------------------------------------------------------------------------------- /metadata/try.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CertifaiAI/learn-java-the-certifai-way/1b62cf91c3f0d9384d63f4599ce13ea838290f9a/metadata/try.jpg -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 18 | 21 | 4.0.0 22 | 23 | ai.certifai 24 | learn-java-the-certifai-way 25 | pom 26 | 1.0-SNAPSHOT 27 | 28 | 29 | 30 | 31 | CertifaiAI_learn-java-the-certifai-way 32 | ${project.artifactId} 33 | certifaiai 34 | https://sonarcloud.io 35 | 36 | 37 | 38 | 39 | java-core 40 | 41 | 42 | learn-java-the-certifai-way 43 | 44 | Fundamentals of Java Programming 45 | 46 | http://certifai.ai 47 | 48 | 49 | 50 | Apache License, Version 2.0 51 | https://www.apache.org/licenses/LICENSE-2.0.txt 52 | repo 53 | 54 | 55 | 56 | 57 | 58 | codenamewei 59 | Chiawei Lim 60 | 61 | 62 | 63 | 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