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 */ 017package org.apache.commons.fileupload.util; 018 019import java.io.IOException; 020 021/** 022 * Interface of an object, which may be closed. 023 */ 024public interface Closeable { 025 026 /** 027 * Closes the object. 028 * 029 * @throws IOException An I/O error occurred. 030 */ 031 void close() throws IOException; 032 033 /** 034 * Returns, whether the object is already closed. 035 * 036 * @return True, if the object is closed, otherwise false. 037 * @throws IOException An I/O error occurred. 038 */ 039 boolean isClosed() throws IOException; 040 041}