Java Simple Programs - 1

1. This Program  contains variables declaration and operators

public class JavaBasics {

public static void main(String[] args)
{
System.out.println("welcome to java");
        int a=20,b=30;  //This is Single Line Comment
        System.out.print("the value of a is "+a+" and b is "+b);
        int c=a+b; int d=a*b; float e=a/b; float f=a%b;
       // System.out.println(c+" "+d+" "+e+" "+f);
        int  x=c=a;
        System.out.println("c ="+c+" x= "+x);
        int y;
        x=1;
        y=x++;
        System.out.println("y ="+y+" x is "+x);
        x=1;
        y=++x;
        System.out.println("y ="+y+" x is "+x);
        boolean i =true;
        boolean j =false;
        System.out.println("or value is "+(i|j)+"and value is "+(i&j));  
}
}

output:

welcome to java

the value of a is 20 and b is 30c =20 x= 20

y =1 x is 2

y =2 x is 2

or value is trueand value is false

2.This Program contains the if-else statement,for and do-while loops

public class JavaLoops {

public static void main(String[] args)

{

int a=10,b=20,c=30;

if(a!=20) { System.out.println("a value is "+a); }

if(a>20){ System.out.println("a value is greater than 20 ");

} else { System.out.println("a value is less than 20 "); }

if(a>b && a>c) {

System.out.println("a is the biggest "+a);

} else if (b>a && b>c) {System.out.println("b is the biggest "+b); } 

else {System.out.println("c is the biggest "+c); }

for(int i=0;i<5;i=i+2) { System.out.println("i value is "+i); }

int x=7;

        while(x<9) { 

        System.out.println("x value is "+x); 

        x=x+1 ; }

        do { 

        System.out.println("x value is "+x);

             x++; } while(x<11) ; 

           

}

}

output:

i value is 4

x value is 7

x value is 8

x value is 9

x value is 10