public class OrderedPairUsage {
  public static void main(String args[]) {
    Pair<Integer, String> p1 = 
      new OrderedPair<>(1, "Black");
    Pair<Integer, String> p2 = 
      new OrderedPair<>(1, "Red");
    boolean same = Util.<Integer, Integer>compare(p1, p2);
    if( same ) {
      System.out.println("p1 is equal to p2");
    } 
    else {
      System.out.println("p1 is NOT equal to p2");
    }
  }
}