You can use more than one parameterized type in a single class definition: : generics « Utility Classes « SCJP

1. SCJP
2. Utility Classes
3. generics

public class UseTwo<T, X> {
  T one;

  X two;

  UseTwo(T one, X two) {
    this.one = one;
    this.two = two;
  }

  T getT() {
    return one;
  }

  X getX() {
    return two;
  }


  public static void main(String[] args) {
    UseTwo<String, Integer> twos = new UseTwo<String, Integer>("foo", 42);

    String theT = twos.getT(); 
    int theX = twos.getX();
  }
}