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 5009712 27 * @summary 1.4 javac should not accept the Covariant Return Type 28 * @author gafter 29 * 30 * @compile CompatibleAbstracts1.java 31 * @compile CompatibleAbstracts2.java 32 * @compile -source 1.4 CompatibleAbstracts2.java 33 * @compile CompatibleAbstracts3.java 34 * @compile/fail -source 1.4 CompatibleAbstracts3.java 35 * @compile CompatibleAbstracts4.java 36 * @compile/fail -source 1.4 CompatibleAbstracts4.java 37 * @compile CompatibleAbstracts5.java 38 * @compile/fail -source 1.4 CompatibleAbstracts5.java 39 */ 40 41 interface A { 42 A f(); 43 } 44 45 interface B extends A { 46 B f(); 47 } 48 49 interface C { 50 B f(); 51 } 52 53 interface D { 54 D f(); 55 }