77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
/*
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* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 7062745 7157798
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* @summary Test inheritance of same-name methods from multiple interfaces
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when the methods have compatible parameter types and return types
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* @compile Test2.java
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*/
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import java.util.*;
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interface A { void m(Map map); }
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interface B { void m(Map<Number, String> map); }
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interface AB extends A, B {} //paramter type: Map<Number, String>
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interface C<K, V> { List<V> getList(Map<K, V> map); }
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interface D { ArrayList getList(Map map); }
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interface CD<K, V> extends C<K, V>, D {} //paramter type: Map<K, V>
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interface E<T> { T get(List<?> list); }
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interface F<T> { T get(List list); }
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interface EF<T1, T2 extends T1> extends E<T1>, F<T2> {} //parameter type: List<?>
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class Test2 {
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//compatible parameter types:
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void test(AB ab) {
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ab.m(new HashMap<Number, String>());
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}
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//compatible parameter types and return types:
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void testRaw(CD cd) { //return type: ArrayList
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ArrayList al = cd.getList(new HashMap());
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}
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<K, V> void testGeneric(CD<K, V> cd) { //return type: List<V>
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V v = cd.getList(new HashMap<K, V>()).get(0);
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}
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void test(CD<Number, String> cd) { //return type: List<String>
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String s = cd.getList(new HashMap<Number, String>()).get(0);
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}
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void test(EF<Number, Integer> ef) { //return type: Number
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Number n = ef.get(new ArrayList<Integer>());
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}
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<T, U extends T> void testGeneric(EF<T, U> ef) { //return type: T
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T t = ef.get(new ArrayList<U>());
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}
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}
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