OnJava8-Examples/generics/TupleList.java

// generics/TupleList.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Combining generic types to make complex generic types
import java.util.*;
import onjava.*;
import java.util.stream.*;

public class TupleList<A, B, C, D>
extends ArrayList<Tuple4<A, B, C, D>> {
  public static void main(String[] args) {
    TupleList<Vehicle, Amphibian, String, Integer> tl =
      new TupleList<>();
    tl.add(TupleTest2.h());
    tl.add(TupleTest2.h());
    tl.forEach(System.out::println);
  }
}
/* Output:
(Vehicle@18025c, Amphibian@16f27d, hi, 47)
(Vehicle@7aac27, Amphibian@3abc88, hi, 47)
*/