test/tools/javac/mixedTarget/ExtendCovariant2.java

Wed, 13 Aug 2014 14:50:00 -0700

author
katleman
date
Wed, 13 Aug 2014 14:50:00 -0700
changeset 2549
0b6cc4ea670f
parent 554
9d9f26857129
child 2525
2eb010b6cb22
permissions
-rw-r--r--

Added tag jdk8u40-b01 for changeset bf89a471779d

duke@1 1 /*
ohair@554 2 * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation.
duke@1 8 *
duke@1 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 13 * accompanied this code).
duke@1 14 *
duke@1 15 * You should have received a copy of the GNU General Public License version
duke@1 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 18 *
ohair@554 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 20 * or visit www.oracle.com if you need additional information or have any
ohair@554 21 * questions.
duke@1 22 */
duke@1 23
duke@1 24 /*
duke@1 25 * @test
duke@1 26 * @bug 5009712
duke@1 27 * @summary 1.4 javac should not accept the Covariant Return Type
duke@1 28 * @author gafter
duke@1 29 *
duke@1 30 * @compile/fail -source 1.4 ExtendCovariant2.java
darcy@289 31 * @compile ExtendCovariant2.java
duke@1 32 */
duke@1 33
duke@1 34 /**
duke@1 35 * java.io.PrintStream java.io.PrintStream.append(char)
duke@1 36 *
duke@1 37 * overrides
duke@1 38 *
duke@1 39 * java.lang.Appendable java.lang.Appendable.append(char)
duke@1 40 *
duke@1 41 * Yet javac should allow extending PrintStream, as long as the user
duke@1 42 * doesn't directly override a covariant method in -source 1.4.
duke@1 43 **/
duke@1 44 public class ExtendCovariant2 extends java.io.PrintStream {
duke@1 45 ExtendCovariant2() throws java.io.IOException {
duke@1 46 super("");
duke@1 47 }
duke@1 48 public java.io.PrintStream append(char c) {
duke@1 49 return this;
duke@1 50 }
duke@1 51 }

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