Swap two variables without a third variable

The code snippet to swap two variables a & b without a third variable,

private static void swap(int a, int b) {
  a = a + b;
  b = a - b;
  a = a - b;

  System.out.println("a: "+a+" b: "+b);

Shortcut for System.out.println in intelliJ is cntrl+SPACE


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