@@ -0,0 +1,395 @@
+package pointGroups.util;%0A%0Apublic class Pair%3CE,F%3E%0A%7B%0A  private E left;%0A  private F right;%0A  %0A  public Pair(E left, F right)%7B%0A    this.left = left;%0A    this.right = right;%0A  %7D%0A  %0A  public E getLeft() %7B%0A    return left;%0A  %7D%0A  public void setLeft(E left) %7B%0A    this.left = left;%0A  %7D%0A  public F getRight() %7B%0A    return right;%0A  %7D%0A  public void setRight(F right) %7B%0A    this.right = right;%0A  %7D%0A  %0A  %0A%7D%0A

add pair class