public class Swapping {
	
	public static void main(String args[]){
		int x = 20;
		int y = 30;
		
		//Swapping 2 numbers without using temp variable
		
		x = x + y;
		y = x - y;
		x = x - y;
		
		System.out.println("Value of x: "+x);
		System.out.println("Value of y: "+y);
	}
}

Output: