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/*
* Copyright (c) 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 7062745 7157798
* @summary Test inheritance of same-name methods from multiple interfaces
when the methods have compatible parameter types and return types
* @compile Test2.java
*/
import java.util.*;
interface A { void m(Map map); }
interface B { void m(Map<Number, String> map); }
interface AB extends A, B {} //paramter type: Map<Number, String>
interface C<K, V> { List<V> getList(Map<K, V> map); }
interface D { ArrayList getList(Map map); }
interface CD<K, V> extends C<K, V>, D {} //paramter type: Map<K, V>
interface E<T> { T get(List<?> list); }
interface F<T> { T get(List list); }
interface EF<T1, T2 extends T1> extends E<T1>, F<T2> {} //parameter type: List<?>
class Test2 {
//compatible parameter types:
void test(AB ab) {
ab.m(new HashMap<Number, String>());
}
//compatible parameter types and return types:
void testRaw(CD cd) { //return type: ArrayList
ArrayList al = cd.getList(new HashMap());
}
<K, V> void testGeneric(CD<K, V> cd) { //return type: List<V>
V v = cd.getList(new HashMap<K, V>()).get(0);
}
void test(CD<Number, String> cd) { //return type: List<String>
String s = cd.getList(new HashMap<Number, String>()).get(0);
}
void test(EF<Number, Integer> ef) { //return type: Number
Number n = ef.get(new ArrayList<Integer>());
}
<T, U extends T> void testGeneric(EF<T, U> ef) { //return type: T
T t = ef.get(new ArrayList<U>());
}
}
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