// generics/TupleTest.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import onjava.*;

public class TupleTest {
  static Tuple2 f() {
    // Autoboxing converts the int to Integer:
    return new Tuple2("hi", 47);
  }
  static Tuple3 g() {
    return new Tuple3(new Amphibian(), "hi", 47);
  }
  static
  Tuple4 h() {
    return
      new Tuple4(
        new Vehicle(), new Amphibian(), "hi", 47);
  }
  static
  Tuple5 k() {
    return new
      Tuple5(
        new Vehicle(), new Amphibian(), "hi", 47, 11.1);
  }
  public static void main(String[] args) {
    Tuple2 ttsi = f();
    System.out.println(ttsi);
    // ttsi.a1 = "there"; // Compile error: final
    System.out.println(g());
    System.out.println(h());
    System.out.println(k());
  }
}
/* Output:
(hi, 47)
(Amphibian@1c7c054, hi, 47)
(Vehicle@14991ad, Amphibian@d93b30, hi, 47)
(Vehicle@a14482, Amphibian@140e19d, hi, 47, 11.1)
*/