1 /*
2  * Copyright (c) 2005, 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package com.sun.imageio.stream;
27 
28 import java.io.Closeable;
29 import java.io.IOException;
30 import sun.java2d.DisposerRecord;
31 
32 /**
33  * Convenience class that closes a given resource (e.g. RandomAccessFile),
34  * typically associated with an Image{Input,Output}Stream, prior to the
35  * stream being garbage collected.
36  */
37 public class CloseableDisposerRecord implements DisposerRecord {
38     private Closeable closeable;
39 
CloseableDisposerRecord(Closeable closeable)40     public CloseableDisposerRecord(Closeable closeable) {
41         this.closeable = closeable;
42     }
43 
dispose()44     public synchronized void dispose() {
45         if (closeable != null) {
46             try {
47                 closeable.close();
48             } catch (IOException e) {
49             } finally {
50                 closeable = null;
51             }
52         }
53     }
54 }
55