public class Main {
  public static void main(String[] a) {
    Point p = (new Point());
    p.x = 5;
    p.y = 2;
    swap(p.x, p.y);
    System.out.println(p.x);
    System.out.println(p.y);
  }

  static void swap(int a, int b) {
    int t = a;
    a = b;
    b = t;
  }
}