content: /**
   *  Copyright (c) 2015-2016 Angelo ZERR.
   *  All rights reserved. This program and the accompanying materials
   *  are made available under the terms of the Eclipse Public License v1.0
   *  which accompanies this distribution, and is available at
   *  http://www.eclipse.org/legal/epl-v10.html
   *
   *  Contributors:
   *  Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation
   */
  package ts.internal.io.input;
  
  import java.io.InputStream;
  
  /**
   * Closed input stream. This stream returns -1 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</code> input stream.
   *
   * @version $Id: ClosedInputStream.java 1304052 2012-03-22 20:55:29Z ggregory $
   * @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 -1;
      }
  
  }
  