1/*
2 * Copyright (c) 2003, 2013, 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
26package java.io;
27
28import 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 */
37public 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     */
52    public void close() throws IOException;
53}
54