1/* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 26 * @bug 8041663 27 */ 28 29public class AmbiguityErrorTest { 30 31 public interface A { } 32 33 public interface B extends A { } 34 35 public interface C { 36 A m(B strategy); 37 } 38 39 public interface D { 40 A m(A strategy); 41 A m(B strategy); 42 } 43 44 public interface T1 extends C, D { } 45 public interface T2 extends D, C { } 46 47 int count; 48 49 class T1Impl implements T1, T2 { 50 public A m(B strategy) { 51 count++; 52 return null; 53 } 54 public A m(A strategy) { 55 throw new AssertionError("Should not get here."); 56 } 57 } 58 59 public static void main(String... args) { 60 new AmbiguityErrorTest().test(); 61 } 62 63 void test() { 64 T1 t1 = new T1Impl(); 65 T2 t2 = new T1Impl(); 66 final B b = new B() { }; 67 t1.m(b); 68 t2.m(b); 69 70 if (count != 2) { 71 throw new IllegalStateException("Did not call the methods properly"); 72 } 73 } 74 75} 76