To Swap the two numbers using third variable where numbers are already initialized.

PROGRAM : 

class Swap

{

public static void main( String [] args)

{

int a,b,c=0;

a=15;

b=50;

System.out.println("the numbers before swapping are :"+a  +b);

c=a;

a=b;

b=c;

System.out.println("the numbers after swapping are:"+a +b);

}

}