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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.io.input;

import static org.apache.commons.io.IOUtils.EOF;

import java.io.InputStream;

/**
 * Closed input stream. This stream returns EOF to all attempts to read
 * something from the stream.
 * 

* Typically uses of this class include testing for corner cases in methods * that accept input streams and acting as a sentinel value instead of a * {@code null} input stream. * * @since 1.4 */ public class ClosedInputStream extends InputStream { /** * A singleton. */ public static final ClosedInputStream CLOSED_INPUT_STREAM = new ClosedInputStream(); /** * Returns -1 to indicate that the stream is closed. * * @return always -1 */ @Override public int read() { return EOF; } }





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