001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.fileupload.util;
018    
019    import java.io.IOException;
020    
021    
022    /**
023     * Interface of an object, which may be closed.
024     */
025    public interface Closeable {
026        /**
027         * Closes the object.
028         * @throws IOException An I/O error occurred.
029         */
030        void close() throws IOException;
031    
032        /**
033         * Returns, whether the object is already closed.
034         * @return True, if the object is closed, otherwise false.
035         * @throws IOException An I/O error occurred.
036         */
037        boolean isClosed() throws IOException;
038    }