BadCovar.java revision 0:9a66ca7c79fa
1/* 2 * Copyright 2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24/* 25 * @test 26 * @bug 5007379 27 * @summary Compiler allows inheritance of multiple methods with unrelated return types 28 * @author gafter 29 * 30 * @compile/fail -source 1.5 BadCovar.java 31 */ 32 33package bad.covar; 34 35import java.util.*; 36 37interface A{ 38 List<? extends A> f(); 39} 40 41interface B{ 42 List<? extends B> f(); 43} 44 45abstract class C implements A, B {} // should give error 46