test/tools/javac/mixedTarget/ExtendCovariant1.java

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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 -source 1.4 ExtendCovariant1.java
31 */
32
33 /**
34 * java.io.PrintStream java.io.PrintStream.append(char)
35 *
36 * overrides
37 *
38 * java.lang.Appendable java.lang.Appendable.append(char)
39 *
40 * Yet javac should allow extending PrintStream, as long as the user
41 * doesn't directly override a covariant method in -source 1.4.
42 **/
43 public class ExtendCovariant1 extends java.io.PrintStream {
44 ExtendCovariant1() throws java.io.IOException {
45 super("");
46 }
47 }

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