1 /*
2  * Copyright (c) 2003, 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
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22  */
23 
24 /* @test
25  * @bug 4854056
26  * @summary Check release on closed channel
27  */
28 
29 import java.io.*;
30 import java.nio.channels.*;
31 
32 public class Release {
main(String[] args)33     public static void main(String[] args) throws Exception {
34         FileOutputStream fos = new FileOutputStream("testFile.tmp");
35         fos.write(new byte[128]);
36         FileChannel ch = fos.getChannel();
37         FileLock fl = ch.lock();
38         ch.close();
39         try {
40             fl.release();
41             throw new RuntimeException("Expected exception not thrown");
42         } catch (ClosedChannelException cce) {
43             // Correct result
44         }
45     }
46 }
47