// 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<String, Integer> f() {

// Autoboxing converts the int to Integer:

return new Tuple2<>("hi", 47);

}

static Tuple3<Amphibian, String, Integer> g() {

return new Tuple3<>(new Amphibian(), "hi", 47);

}

static

Tuple4<Vehicle, Amphibian, String, Integer> h() {

return

new Tuple4<>(

new Vehicle(), new Amphibian(), "hi", 47);

}

static

Tuple5<Vehicle, Amphibian,

String, Integer, Double> k() {

return new

Tuple5<>(

new Vehicle(), new Amphibian(), "hi", 47, 11.1);

}

public static void main(String[] args) {

Tuple2<String, Integer> 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)

*/