view j2se/test/tools/javac/generics/wildcards/AssignmentSameType1.java @ 7:807dfe9c366c trunk

[svn] Load openjdk/jdk7/b19 into jdk/trunk.
author xiomara
date Fri, 31 Aug 2007 00:44:13 +0000
parents a4ed3fb96592
children
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/*
 * Copyright 2003 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/*
 * @test
 * @summary Test subtyping for wildcards with the same type bound.
 *
 * @compile -source 1.5 AssignmentSameType1.java
 */

public class AssignmentSameType1 {

    public static void main(String[] args) {
	Ref<B> exact = null;
	Ref<? extends B> ebound = null;
	Ref<? super B> sbound = null;
	Ref<?> unbound = null;

;	exact = exact;		// <<pass>> <A> = <A>

	ebound = exact;		// <<pass>> <? extends A> = <A>
	ebound = ebound;        // <<pass>> <? extends A> = <? extends A>

	sbound = exact;		// <<pass>> <? super A> = <A>
	sbound = sbound;	// <<pass>> <? super A> = <? super A>

	unbound = exact;	// <<pass>> <?> = <A>
	unbound = ebound;	// <<pass>> <?> = <? extends A>
	unbound = sbound;	// <<pass>> <?> = <? super A>
	unbound = unbound;	// <<pass>> <?> = <?>
    }
}

class Ref<A> {}
class B {}