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// 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)
*/