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test/tools/javac/generics/Conditional.java@959103a6100f (annotated)

test/tools/javac/generics/Conditional.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2003, 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 4881179 4883239
aoqi@0	27	* @summary Rule for semantics of ?: in the presence of generics and generic class Class
aoqi@0	28	* @author gafter
aoqi@0	29	*
aoqi@0	30	* @compile Conditional.java
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	package conditional;
aoqi@0	34
aoqi@0	35	import java.io.Serializable;
aoqi@0	36
aoqi@0	37	interface I {}
aoqi@0	38	interface J {}
aoqi@0	39	class A implements I, J {}
aoqi@0	40	class B implements I, J {}
aoqi@0	41	class C extends B {}
aoqi@0	42
aoqi@0	43	class Conditional {
aoqi@0	44	static boolean cond = String.class.getName().length() == 1;
aoqi@0	45	public static void main(String[] args) {
aoqi@0	46	Class c = cond ? A.class : B.class;
aoqi@0	47	Class<?> d = cond ? A.class : B.class;
aoqi@0	48
aoqi@0	49	Class<? extends B> e = cond ? B.class : C.class;
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	void f(A a, B b) {
aoqi@0	53	I i = cond ? a : b;
aoqi@0	54	J j = cond ? a : b;
aoqi@0	55	}
aoqi@0	56
aoqi@0	57	// required for compatibility
aoqi@0	58	Class g(Class a) {
aoqi@0	59	return cond ? a : B.class;
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	// required for compatibility
aoqi@0	63	byte[] h(byte[] a, byte[] b) {
aoqi@0	64	return cond ? a : b;
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	// This one is hard because of the recursive F-bounds
aoqi@0	68	// The naive result is the infinite type
aoqi@0	69	// Class<? extends Number&Comparable<? extends Number&Comparable<? extends
aoqi@0	70	// ...
aoqi@0	71	Class<? extends Comparable<?>> c =
aoqi@0	72	cond ? Integer.class : Float.class;
aoqi@0	73
aoqi@0	74	Comparable<?> o =
aoqi@0	75	cond ? true : 3;
aoqi@0	76
aoqi@0	77	/*
aoqi@0	78
aoqi@0	79	// See 4942040
aoqi@0	80	void f(Cloneable a, int[] b) {
aoqi@0	81	Cloneable x = cond ? a : b;
aoqi@0	82	}
aoqi@0	83	void f(Serializable a, int[] b) {
aoqi@0	84	Serializable x = cond ? a : b;
aoqi@0	85	}
aoqi@0	86
aoqi@0	87	// See 4941882
aoqi@0	88	void f(float[] a, int[] b) {
aoqi@0	89	Serializable x = cond ? a : b;
aoqi@0	90	}
aoqi@0	91	*/
aoqi@0	92	}