/*
 * 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 null input stream. 
Since:
1.4/**
 * Closed input stream. This stream returns EOF to all attempts to read
 * something from the stream.
 * <p>
 * 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.
/**
     * A singleton.
     */
    public static final ClosedInputStream CLOSED_INPUT_STREAM = new ClosedInputStream();

    
Returns -1 to indicate that the stream is closed.
Returns:
always -1/**
     * Returns -1 to indicate that the stream is closed.
     *
     * @return always -1
     */
    @Override
    public int read() {
        return EOF;
    }

}