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 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