1 /*
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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
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 package java.io;
27 
28 import java.io.IOException;
29 
30 /**
31  * A {@code Closeable} is a source or destination of data that can be closed.
32  * The close method is invoked to release resources that the object is
33  * holding (such as open files).
34  *
35  * @since 1.5
36  */
37 public interface Closeable extends AutoCloseable {
38 
39     /**
40      * Closes this stream and releases any system resources associated
41      * with it. If the stream is already closed then invoking this
42      * method has no effect.
43      *
44      * <p> As noted in {@link AutoCloseable#close()}, cases where the
45      * close may fail require careful attention. It is strongly advised
46      * to relinquish the underlying resources and to internally
47      * <em>mark</em> the {@code Closeable} as closed, prior to throwing
48      * the {@code IOException}.
49      *
50      * @throws IOException if an I/O error occurs
51      */
close()52     public void close() throws IOException;
53 }
54