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/*
 * Copyright  2003-2004 The Apache Software Foundation
 *
 *  Licensed 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.tools.ant.util;

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Class that can be used to wrap System.in
 * without getting anxious about any client closing the stream.
 *
 * 
 * In code-language it means that it is not necessary to do:
 * 
 * if (out != System.in) {
 *   in.close();
 * }
 * 
 * 
 *
 * @since Ant 1.6
 */
public class KeepAliveInputStream extends FilterInputStream {

    public KeepAliveInputStream(InputStream in) {
        super(in);
    }

    /** this method does nothing */
    public void close() throws IOException {
        //
    }
}