Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/lambda/TargetType03.java@7909abb85562 (annotated)
test/tools/javac/lambda/TargetType03.java
Wed, 14 Nov 2018 10:18:25 -0800
- author
- diazhou
- date
- Wed, 14 Nov 2018 10:18:25 -0800
- changeset 3762
- 7909abb85562
- parent 0
- 959103a6100f
- permissions
- -rw-r--r--
Added tag jdk8u201-b04 for changeset a7f48b9dfb82
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | */ |
| aoqi@0 | 23 | |
| aoqi@0 | 24 | /* |
| aoqi@0 | 25 | * @test |
| aoqi@0 | 26 | * @bug 8003280 |
| aoqi@0 | 27 | * @summary Add lambda tests |
| aoqi@0 | 28 | * check overload resolution and target type inference w.r.t. generic methods |
| aoqi@0 | 29 | * @author Maurizio Cimadamore |
| aoqi@0 | 30 | * @run main TargetType03 |
| aoqi@0 | 31 | */ |
| aoqi@0 | 32 | import java.util.*; |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | public class TargetType03 { |
| aoqi@0 | 35 | |
| aoqi@0 | 36 | interface Mapper<X,Y> { |
| aoqi@0 | 37 | Y myMap(X a); |
| aoqi@0 | 38 | } |
| aoqi@0 | 39 | |
| aoqi@0 | 40 | static class MapperList<A> extends ArrayList<A> { |
| aoqi@0 | 41 | public <B> List<B> myMap(Mapper<A, B> mapper) { |
| aoqi@0 | 42 | ArrayList<B> mappedList = new ArrayList<>(); |
| aoqi@0 | 43 | for (A elem : this) { |
| aoqi@0 | 44 | mappedList.add(mapper.myMap(elem)); |
| aoqi@0 | 45 | } |
| aoqi@0 | 46 | return mappedList; |
| aoqi@0 | 47 | }; |
| aoqi@0 | 48 | } |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | public static void main(String[] args) { |
| aoqi@0 | 51 | MapperList<Integer> numbers = new MapperList<>(); |
| aoqi@0 | 52 | numbers.add(1); |
| aoqi@0 | 53 | numbers.add(2); |
| aoqi@0 | 54 | numbers.add(3); |
| aoqi@0 | 55 | numbers.add(4); |
| aoqi@0 | 56 | numbers.add(5); |
| aoqi@0 | 57 | List<Integer> sqNumbers = numbers.myMap(a -> a * a); |
| aoqi@0 | 58 | //check invariants |
| aoqi@0 | 59 | if (numbers.size() != sqNumbers.size()) { |
| aoqi@0 | 60 | throw new AssertionError(); |
| aoqi@0 | 61 | } |
| aoqi@0 | 62 | for (int i = 0; i < numbers.size() ; i ++) { |
| aoqi@0 | 63 | if (sqNumbers.get(i) != Math.pow(numbers.get(i), 2)) { |
| aoqi@0 | 64 | throw new AssertionError(); |
| aoqi@0 | 65 | } |
| aoqi@0 | 66 | } |
| aoqi@0 | 67 | } |
| aoqi@0 | 68 | } |
