├── .gitignore
├── .idea
├── codeStyles
│ └── Project.xml
├── gradle.xml
├── misc.xml
└── runConfigurations.xml
├── app
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── atilsamancioglu
│ │ └── javabasics
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── atilsamancioglu
│ │ │ └── javabasics
│ │ │ ├── Arrays.java
│ │ │ ├── Loops.java
│ │ │ ├── Statements.java
│ │ │ └── Variables.java
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ └── ic_launcher_background.xml
│ │ ├── mipmap-anydpi-v26
│ │ ├── ic_launcher.xml
│ │ └── ic_launcher_round.xml
│ │ ├── mipmap-hdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-mdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── com
│ └── atilsamancioglu
│ └── javabasics
│ └── ExampleUnitTest.java
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/caches
5 | /.idea/libraries
6 | /.idea/modules.xml
7 | /.idea/workspace.xml
8 | /.idea/navEditor.xml
9 | /.idea/assetWizardSettings.xml
10 | .DS_Store
11 | /build
12 | /captures
13 | .externalNativeBuild
14 |
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/.idea/codeStyles/Project.xml:
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/.idea/gradle.xml:
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/.idea/misc.xml:
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/.idea/runConfigurations.xml:
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/app/.gitignore:
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1 | /build
2 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 28
5 | defaultConfig {
6 | applicationId "com.atilsamancioglu.javabasics"
7 | minSdkVersion 28
8 | targetSdkVersion 28
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 | }
20 |
21 | dependencies {
22 | implementation fileTree(dir: 'libs', include: ['*.jar'])
23 | implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
24 | testImplementation 'junit:junit:4.12'
25 | androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
26 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'
27 | }
28 |
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
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/app/src/androidTest/java/com/atilsamancioglu/javabasics/ExampleInstrumentedTest.java:
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1 | package com.atilsamancioglu.javabasics;
2 |
3 | import android.content.Context;
4 |
5 | import androidx.test.InstrumentationRegistry;
6 | import androidx.test.runner.AndroidJUnit4;
7 |
8 | import org.junit.Test;
9 | import org.junit.runner.RunWith;
10 |
11 | import static org.junit.Assert.*;
12 |
13 | /**
14 | * Instrumented test, which will execute on an Android device.
15 | *
16 | * @see Testing documentation
17 | */
18 | @RunWith(AndroidJUnit4.class)
19 | public class ExampleInstrumentedTest {
20 | @Test
21 | public void useAppContext() {
22 | // Context of the app under test.
23 | Context appContext = InstrumentationRegistry.getTargetContext();
24 |
25 | assertEquals("com.atilsamancioglu.javabasics", appContext.getPackageName());
26 | }
27 | }
28 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/com/atilsamancioglu/javabasics/Arrays.java:
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1 | package com.atilsamancioglu.javabasics;
2 |
3 | import java.util.ArrayList;
4 | import java.util.HashMap;
5 | import java.util.HashSet;
6 |
7 | public class Arrays {
8 |
9 | public static void main(String[] args){
10 |
11 | //Array
12 |
13 | String[] myStringArray = new String[4];
14 |
15 | myStringArray[0] = "James";
16 | myStringArray[1] = "Lars";
17 | myStringArray[2] = "Kirk";
18 | myStringArray[3] = "Rob";
19 |
20 | System.out.println(myStringArray[1]);
21 |
22 | int[] myIntegerArray = new int[4];
23 | myIntegerArray[0] = 50;
24 | myIntegerArray[1] = 60;
25 | myIntegerArray[2] = 70;
26 | myIntegerArray[3] = 80;
27 |
28 | System.out.println(myIntegerArray[1]);
29 |
30 | int[] myNumberArray = {1,2,3,4,5,6,7,8};
31 | System.out.println(myNumberArray[2]);
32 |
33 |
34 | //Lists
35 |
36 | ArrayList myMusicians = new ArrayList();
37 |
38 | myMusicians.add("James");
39 | myMusicians.add("Lars");
40 | myMusicians.add(1,"Kirk");
41 | myMusicians.add("Rob");
42 |
43 | System.out.println(myMusicians.get(0));
44 | System.out.println(myMusicians.get(1));
45 | System.out.println(myMusicians.get(2));
46 | System.out.println(myMusicians.get(3));
47 |
48 | System.out.println(myMusicians.size());
49 |
50 | //Set
51 |
52 | HashSet mySet = new HashSet();
53 |
54 | mySet.add("James");
55 | mySet.add("James");
56 |
57 | System.out.println(mySet.size());
58 |
59 | //HashMap
60 |
61 | HashMap myHashMap = new HashMap();
62 |
63 | myHashMap.put("name","James");
64 | myHashMap.put("instrument","Guitar");
65 |
66 | System.out.println(myHashMap.get("name"));
67 | System.out.println(myHashMap.get("instrument"));
68 |
69 |
70 | HashMap mySecondMap = new HashMap<>();
71 |
72 | mySecondMap.put("run",100);
73 | mySecondMap.put("basketball",200);
74 |
75 | System.out.println(mySecondMap.get("run"));
76 |
77 | }
78 |
79 | }
80 |
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/app/src/main/java/com/atilsamancioglu/javabasics/Loops.java:
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1 | package com.atilsamancioglu.javabasics;
2 |
3 | public class Loops {
4 |
5 | public static void main(String[] args) {
6 |
7 |
8 | //for loop
9 |
10 | int[] myNumbers = {12,15,18,21,24};
11 |
12 |
13 |
14 | //System.out.println(x);
15 |
16 | for (int i = 0; i < myNumbers.length; i++) {
17 |
18 | int x = myNumbers[i] / 3 * 5;
19 | //System.out.println(x);
20 |
21 | }
22 |
23 | for (int number : myNumbers) {
24 |
25 | //System.out.println(number / 3 * 5);
26 |
27 | }
28 |
29 | for (int a = 0; a < 10; a++) {
30 | int b = a * 10;
31 | //System.out.println(b);
32 | }
33 |
34 | //while
35 |
36 |
37 | int j = 0;
38 |
39 | while (j < 10) {
40 | int m = j *10;
41 | System.out.println(m);
42 |
43 | j++;
44 | }
45 |
46 | }
47 |
48 |
49 | }
50 |
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/app/src/main/java/com/atilsamancioglu/javabasics/Statements.java:
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1 | package com.atilsamancioglu.javabasics;
2 |
3 | public class Statements {
4 |
5 | public static void main(String[] args){
6 |
7 | int x = 5;
8 | System.out.println(x);
9 | x = x + 1;
10 | System.out.println(x);
11 | x++;
12 | System.out.println(x);
13 | x--;
14 | System.out.println(x);
15 | x = x * 5;
16 | System.out.println(x);
17 |
18 |
19 | int y = 4;
20 |
21 | System.out.println(x>y);
22 |
23 | System.out.println(y>x);
24 |
25 | y = 30;
26 |
27 | System.out.println(x>y);
28 |
29 | System.out.println(x>=y);
30 |
31 | System.out.println(x==y);
32 |
33 | System.out.println(x!=y);
34 |
35 | // and &&
36 | // or ||
37 |
38 | x = 30;
39 | y = 30;
40 | int z = 5;
41 |
42 | System.out.println(x
7 |
12 |
13 |
19 |