How to swap two variables in one line code in Java?

Rules:

           a = 10;  b = 20;

a = a ^ b;

b = a ^ b;

a = a ^ b;

public class SwapNumber {

      /**

       * Print swapped value

       * @param a

       * @param b

       */

      private static void printSwappedNumbers(int a, int b) {

            System.out.println("Value of a# "+a+" value of b# "+b);

            a = a ^ b ^ (b=a);

            System.out.println("Value of a# "+a+" value of b# "+b);

      }

     

      /**

       * Driver Method

       * @param args

       */

      public static void main(String[] args) {

            int a = 10, b = 20;

            printSwappedNumbers(a,b);

      }

}