├── README.md
├── Hello_world.java
├── add.java
├── favsuperhero.java
├── Addition_args.java
├── Numbergen.java
├── stringb.java
├── addsubimpl.java
├── multi.java
├── .java
├── subtraction.java
├── addition.java
├── factorial.java
├── Ironman.java
├── student1.java
├── strbuff.java
├── typecasting.java
├── typecast.java
├── Superhero.java
├── mathoperation.java
└── armstrong.java


/README.md:
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1 | # java-lab
2 | this repository contains the java basics
3 | 


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/Hello_world.java:
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 1 | class Hello_world {
 2 | 
 3 | public static void main(String[] surgs)
 4 | 
 5 | {
 6 | 
 7 | System.out.println("Hello world");
 8 | 
 9 | }
10 | 
11 | }


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/add.java:
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1 | class Add
2 | {
3 |     public static void main(String[] args) 
4 |   {
5 |      int a = Integer.parseInt (args[0 ]);
6 |      int b = Integer.parseInt (args [1]);
7 |      System.out.println("Addition of "+a+"+"+b+" is "+ (a+b));
8 |   }
9 | }


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/favsuperhero.java:
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1 | class favsuperhero{
2 |             public static void main(String[] args){
3 |                     Ironman im=new Ironman("Iron man","fly","Jovial",55,"avengers");
4 |                     im.display();
5 |                    }
6 |               }
7 | 


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/Addition_args.java:
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1 | class Addition_args
2 | {
3 |     public static void main(String[] args) 
4 |   {
5 |      int a = Integer.parseInt (args[0 ]);
6 |      int b = Integer.parseInt (args [1]);
7 |      System.out.println("Addition of "+a+"+"+b+" is "+ (a+b));
8 |   }
9 | }


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/Numbergen.java:
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 1 | class Numbergen
 2 | {
 3 |    public static void main(String[] args)
 4 |   {
 5 |     for(int i=1;i<=100;i++)
 6 |    {
 7 |     System.out.print(i+" ");
 8 |     if(i%10==0)
 9 |    { 
10 |     System.out.println();
11 |    }
12 |    }
13 |   }
14 | }


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/stringb.java:
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1 | class stringb{
2 |           public static void main(String[] args){
3 |               StringBuffer sb=new StringBuffer("study");
4 |               System.out.println(sb);
5 |               sb.append("tonight");
6 |               System.out.println(sb);
7 |           }
8 | }
9 | 


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/addsubimpl.java:
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1 | import arithmeticop.*;
2 | class addsubimpl{
3 |         public static void main(String[] args){
4 |                addition a1=new addition(3,4);
5 |                a1.sum();
6 |                subtraction s1=new subtraction(5,4);
7 |                s1.difference();
8 |             }
9 | }


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/multi.java:
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 1 | class multi
 2 | {
 3 | 	public static void main(String args[]) {
 4 | 	    int a=Integer.parseInt(args[0]);
 5 | 		System.out.println("multiplication table for "+a+" is :");
 6 | 		for(int i=1;i<=10;i++)
 7 | 		{
 8 | 		 System.out.println(""+a+"*"+i+"="+(a*i));
 9 | 		}
10 | 	}
11 | }
12 | 


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/.java:
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 1 | class array{
 2 |           public static void main(String[] args){
 3 |              int[] arr={1,2,5,6,7,8};
 4 |              System.out.println("the elements are:");
 5 |              for (int i=0;i<arr.length;i++){
 6 |                   System.out.println(arr[i]);
 7 |             }
 8 |         }
 9 |     }
10 | 


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/subtraction.java:
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 1 | package arithmeticop;
 2 | public class subtraction{
 3 |            private int d1,d2;
 4 |            public subtraction(int n1,int n2){
 5 |                 this.d1=n1;
 6 |                 this.d2=n2;
 7 |       }
 8 |       public void difference(){
 9 |                  System.out.println("subtraction of two given numbers is"+(d1-d2));
10 |            }
11 | }
12 | 


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/addition.java:
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 1 | package arithmeticop{
 2 | public class addition{
 3 |            private int d1,d2;
 4 |            public addition(int n1,int n2){
 5 |                         this.d1=n1;
 6 |                         this.d2=n2;
 7 |           }
 8 |           public void sum()
 9 |           {
10 |                   System.out.println("sum of two given numbers is"+(d1+d2));
11 |            }
12 |   }


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/factorial.java:
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 1 | import java.util.*;
 2 | public class factorial{
 3 |        public static void main(String[] args){
 4 |          int f=1;
 5 |          Scanner sc=new Scanner(System.in);
 6 |          System.out.println("enter the number to find the factorial");
 7 |  int n=sc.nextInt();
 8 |  for(int i=1;i<=n;i++){
 9 |        f=f*i;
10 |    }
11 | System.out.println("the factorial of"+n+"is"+f);
12 | }
13 | }
14 | 
15 | 


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/Ironman.java:
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 1 | class Ironman extends Superhero{
 2 |               String mov;
 3 |               Ironman(String name,String pwr,String bhvr,int ag,String moviename){
 4 |                 super(name,pwr,bhvr,ag);
 5 |                 this.mov=moviename;
 6 |                 }
 7 |                 void display(){
 8 |                   super.display();
 9 |                   System.out.println("moviename:"+mov);
10 |                 }
11 |     }
12 | 


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/student1.java:
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 1 | public class student1{
 2 |      public static void main(String[] args){
 3 |          student s=new student("james","1232");
 4 |             factorial.main(null);
 5 |             s.display();
 6 |     }
 7 | }
 8 | class student{
 9 |   String nm,rn;
10 |   student(String name,String rno){
11 |         nm=name;
12 |         rn=rno;
13 |       }
14 | public void display(){
15 |         System.out.printf("welcome %s roll no is %s \n",nm,rn);  
16 |    }
17 | }


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/strbuff.java:
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 1 | import java.util.*;
 2 | class strbuff{
 3 |            public static void main(String[] args){
 4 |            Scanner sc=new Scanner(System.in);
 5 |            System.out.println("enter the string");
 6 |            String s1=sc.next();
 7 |            s1.concat("hey");
 8 |            System.out.println("String after conactenation is "+s1);
 9 |            StringBuffer sb=new StringBuffer("hello");
10 |            sb.append("hi");
11 |            System.out.println("string after appending is "+sb);
12 |     }
13 | }	


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/typecasting.java:
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 1 | class typecast{
 2 |         public static void main(String[] args){
 3 |           int marks=80;
 4 |           long lmv=marks;
 5 |           System.out.println("integer value"+marks);
 6 |           System.out.println("long value"+lmv);
 7 |          /* float d=129.3;
 8 |           double inm=(double)d;*/
 9 | 
10 |           double d=129.345;
11 |           int inm=(int)d;
12 |           
13 |           System.out.println("double value"+d);
14 |           System.out.println("integer value"+inm);
15 | 
16 | 
17 |   }
18 | }
19 | 
20 | 


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/typecast.java:
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 1 | class typecast{
 2 |         public static void main(String[] args){
 3 |           int marks=80;
 4 |           long lmv=marks;
 5 |           System.out.println("integer value"+marks);
 6 |           System.out.println("long value"+lmv);
 7 |           /*float d=129.345;
 8 |           double inm=(double)d;*/
 9 | 
10 |           double d=129.345;
11 |           int inm=(int)d;
12 |           
13 |           System.out.println("double value"+d);
14 |           System.out.println("integer value"+inm);
15 | 
16 | 
17 |   }
18 | }
19 | 
20 | 
21 | 
22 | 
23 |         


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/Superhero.java:
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 1 | class Superhero{
 2 |          String sname,spower,behaviour;
 3 |          int age;
 4 |          Superhero(String name,String pwr,String bhvr,int ag){
 5 |                 this.sname=name;
 6 |                 this.spower=pwr;
 7 |                 this.behaviour=bhvr;
 8 |                 this.age=ag;
 9 |  }
10 | 
11 | void display(){
12 |           System.out.println("your hero is");
13 |           System.out.println("hero name:"+sname);
14 |           System.out.println("super power is:"+spower);
15 |           System.out .println("behaviour is:"+behaviour);
16 |           System.out.println("age is:"+age);
17 |   }
18 | }
19 |      


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/mathoperation.java:
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 1 | import java.util.*;
 2 | class mathoperation
 3 | {
 4 |    public static void main(String[] args)
 5 |   {
 6 |     Scanner sc = new Scanner(System.in);
 7 |     System.out.println("Enter the Values of a & b:");
 8 |     int a=sc.nextInt();
 9 |     int b=sc.nextInt();
10 |     System.out.println("Addition of "+a+" + "+b+" is "+(a+b));
11 |     System.out.println("Substraction of "+a+" - "+b+" is "+(a-b));
12 |     System.out.println("Multiplication of "+a+" * "+b+" is "+(a*b));
13 |     if (b!= 0)
14 |       System.out.println("Division of "+a+"/"+b+" is "+(a/b));
15 |     else
16 |       System.out.println ("We cannot divide "+a+" by zero");
17 |   }
18 | }


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/armstrong.java:
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 1 | import java.util.*;
 2 | public class armstrong{
 3 |       public static void main(String[] args){
 4 |           int sum=0,n,orn;
 5 |           Scanner sc=new Scanner(System.in);
 6 |           System.out.println("enter the number");
 7 |           n=sc.nextInt();
 8 |           orn=n;
 9 |           while(orn!=0){
10 |                int rem=orn%10;
11 |                sum+=rem*rem*rem;
12 |                orn/=10;
13 |           }
14 | 
15 |    if(sum==n){
16 |         System.out.println("armstrong number");
17 |      }
18 |    else{
19 |        System.out.println("not an armstrong number");
20 |     }
21 |   sc.close();
22 | }
23 | }
24 |        
25 |          


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