Java switch two int values without using the third variable

Question

We would need to switch two int values without using the third variable in Java.

For example, we have 


int a = 3;
int b = 4;

We need to find a way to switch the value between a and b without using the third value.

We can do it easily as follow: 

int a = 3;
int b = 4;

int c = a; //using the third variable

a = b;
b = c;

Find a way without using the third variable. 



class Main { 
 
  public static void main(String args[])  
  { 
    int a = 3;
    int b = 4;
    
    System.out.println("a="+a);
    System.out.println("b="+b);

    
    a = a + b;
    b = a - b;
    a = a - b;
    System.out.println("a="+a);
    System.out.println("b="+b);
  } 
}



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