43 lines
1.1 KiB
Java
43 lines
1.1 KiB
Java
// generics/TupleTest.java
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// ©2015 MindView LLC: see Copyright.txt
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import com.mindviewinc.util.*;
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class Amphibian {}
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class Vehicle {}
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public class TupleTest {
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static TwoTuple<String, Integer> f() {
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// Autoboxing converts the int to Integer:
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return new TwoTuple<>("hi", 47);
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}
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static ThreeTuple<Amphibian, String, Integer> g() {
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return new ThreeTuple<>(new Amphibian(), "hi", 47);
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}
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static
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FourTuple<Vehicle, Amphibian, String, Integer> h() {
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return
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new FourTuple<>(
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new Vehicle(), new Amphibian(), "hi", 47);
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}
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static
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FiveTuple<Vehicle, Amphibian, String, Integer, Double> k(){
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return new
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FiveTuple<>(
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new Vehicle(), new Amphibian(), "hi", 47, 11.1);
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}
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public static void main(String[] args) {
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TwoTuple<String, Integer> ttsi = f();
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System.out.println(ttsi);
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// ttsi.first = "there"; // Compile error: final
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System.out.println(g());
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System.out.println(h());
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System.out.println(k());
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}
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}
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/* Output:
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(hi, 47)
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(Amphibian@139a55, hi, 47)
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(Vehicle@1db9742, Amphibian@106d69c, hi, 47)
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(Vehicle@52e922, Amphibian@25154f, hi, 47, 11.1)
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*/
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