Sat, 22 Dec 2018 13:10:38 -0800
Added tag jdk8u202-b25 for changeset 15d8c732039b
1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 8003280
27 * @summary Add lambda tests
28 * check overload resolution and target type inference w.r.t. generic methods
29 * @author Maurizio Cimadamore
30 * @run main TargetType03
31 */
32 import java.util.*;
34 public class TargetType03 {
36 interface Mapper<X,Y> {
37 Y myMap(X a);
38 }
40 static class MapperList<A> extends ArrayList<A> {
41 public <B> List<B> myMap(Mapper<A, B> mapper) {
42 ArrayList<B> mappedList = new ArrayList<>();
43 for (A elem : this) {
44 mappedList.add(mapper.myMap(elem));
45 }
46 return mappedList;
47 };
48 }
50 public static void main(String[] args) {
51 MapperList<Integer> numbers = new MapperList<>();
52 numbers.add(1);
53 numbers.add(2);
54 numbers.add(3);
55 numbers.add(4);
56 numbers.add(5);
57 List<Integer> sqNumbers = numbers.myMap(a -> a * a);
58 //check invariants
59 if (numbers.size() != sqNumbers.size()) {
60 throw new AssertionError();
61 }
62 for (int i = 0; i < numbers.size() ; i ++) {
63 if (sqNumbers.get(i) != Math.pow(numbers.get(i), 2)) {
64 throw new AssertionError();
65 }
66 }
67 }
68 }