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test/tools/javac/lambda/T8025290/ExplicitVSImplicitLambdaTest.java@45746e46893b (annotated)

test/tools/javac/lambda/T8025290/ExplicitVSImplicitLambdaTest.java

Mon, 01 Jun 2015 15:19:54 -0700

author

darcy

date

Mon, 01 Jun 2015 15:19:54 -0700

changeset 3834

45746e46893b

parent 0

959103a6100f

permissions

-rw-r--r--

8075546: Add tiered testing definitions to the langtools repo
Reviewed-by: jjg

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	}