Swaping without using third or temp variable and wihout using + operator in java

import java.io.*;
class swap
{
    public static void main(String s[]) throws IOException
    {
        int a=0,b=0;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter value of a : ");
        a = Integer.parseInt(br.readLine());
        System.out.print("Enter value of b : ");
        b = Integer.parseInt(br.readLine());
        System.out.println("Before Swaping");
        System.out.println("a = "+a);
        System.out.println("b = "+b);
        a=a*b;
        b=a/b;
        a=a/b;
        System.out.println("After Swaping");
        System.out.println("a = "+a);
        System.out.println("b = "+b);
    }
    }
save as swap.java

Author : Unknown

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