Wed, 24 Sep 2014 11:38:26 -0700
Added tag jdk8u40-b07 for changeset 2fa3858a281f
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2013, 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 8025290 |
aoqi@0 | 27 | * @summary javac implicit versus explicit lambda compilation error |
aoqi@0 | 28 | * @compile ExplicitVSImplicitLambdaTest.java |
aoqi@0 | 29 | */ |
aoqi@0 | 30 | |
aoqi@0 | 31 | import java.util.function.*; |
aoqi@0 | 32 | |
aoqi@0 | 33 | public class ExplicitVSImplicitLambdaTest { |
aoqi@0 | 34 | private void test() |
aoqi@0 | 35 | { |
aoqi@0 | 36 | /* in the explicit case "e" is inferred to String so we can use a String |
aoqi@0 | 37 | * only method. |
aoqi@0 | 38 | */ |
aoqi@0 | 39 | MyComparator.mycomparing1((String e) -> e.concat("")); |
aoqi@0 | 40 | MyComparator.mycomparing2((String e) -> e.concat("")); |
aoqi@0 | 41 | MyComparator.mycomparing3((String e) -> e.concat("")); |
aoqi@0 | 42 | MyComparator.mycomparing4((String e) -> e.concat("")); |
aoqi@0 | 43 | |
aoqi@0 | 44 | /* in the implicit case "e" is inferred to Object so toString() is OK. |
aoqi@0 | 45 | */ |
aoqi@0 | 46 | MyComparator.mycomparing1((e) -> e.toString()); |
aoqi@0 | 47 | MyComparator.mycomparing2((e) -> e.toString()); |
aoqi@0 | 48 | MyComparator.mycomparing3((e) -> e.toString()); |
aoqi@0 | 49 | MyComparator.mycomparing4((e) -> e.toString()); |
aoqi@0 | 50 | } |
aoqi@0 | 51 | } |
aoqi@0 | 52 | |
aoqi@0 | 53 | interface MyComparator<T> { |
aoqi@0 | 54 | public static <T, U extends Comparable<? super U>> MyComparator<T> mycomparing1( |
aoqi@0 | 55 | Function<? super T, ? extends U> keyExtractor) { |
aoqi@0 | 56 | return null; |
aoqi@0 | 57 | } |
aoqi@0 | 58 | |
aoqi@0 | 59 | public static <T, U extends Comparable<? super U>> MyComparator<T> mycomparing2( |
aoqi@0 | 60 | Function<? super T, ? super U> keyExtractor) { |
aoqi@0 | 61 | return null; |
aoqi@0 | 62 | } |
aoqi@0 | 63 | |
aoqi@0 | 64 | public static <T, U extends Comparable<? super U>> MyComparator<T> mycomparing3( |
aoqi@0 | 65 | Function<? extends T, ? extends U> keyExtractor) { |
aoqi@0 | 66 | return null; |
aoqi@0 | 67 | } |
aoqi@0 | 68 | |
aoqi@0 | 69 | public static <T, U extends Comparable<? super U>> MyComparator<T> mycomparing4( |
aoqi@0 | 70 | Function<? extends T, ? super U> keyExtractor) { |
aoqi@0 | 71 | return null; |
aoqi@0 | 72 | } |
aoqi@0 | 73 | } |