OnJava8-Examples/generics/TupleList.java

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// generics/TupleList.java
// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Combining generic types to make complex generic types
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import java.util.*;
import onjava.*;
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import java.util.stream.*;
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public class TupleList<A, B, C, D>
extends ArrayList<Tuple4<A, B, C, D>> {
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public static void main(String[] args) {
TupleList<Vehicle, Amphibian, String, Integer> tl =
new TupleList<>();
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tl.add(TupleTest2.h());
tl.add(TupleTest2.h());
tl.forEach(System.out::println);
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}
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}
/* Output:
(Vehicle@ec7777, Amphibian@107d329, hi, 47)
(Vehicle@1629346, Amphibian@4b9385, hi, 47)
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*/