content: /*
   * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package java.io;
  
  /**
   * ObjectInput extends the DataInput interface to include the reading of
   * objects. DataInput includes methods for the input of primitive types,
   * ObjectInput extends that interface to include objects, arrays, and Strings.
   *
   * @author  unascribed
   * @see InputStream
   * @see ObjectOutputStream
   * @see ObjectInputStream
   * @since   JDK1.1
   */
  public interface ObjectInput extends DataInput, AutoCloseable {
      /**
       * Read and return an object. The class that implements this interface
       * defines where the object is "read" from.
       *
       * @return the object read from the stream
       * @exception ClassNotFoundException If the class of a serialized
       *      object cannot be found.
       * @exception IOException If any of the usual Input/Output
       * related exceptions occur.
       */
      public Object readObject()
          throws ClassNotFoundException, IOException;
  
      /**
       * Reads a byte of data. This method will block if no input is
       * available.
       * @return  the byte read, or -1 if the end of the
       *          stream is reached.
       * @exception IOException If an I/O error has occurred.
       */
      public int read() throws IOException;
  
      /**
       * Reads into an array of bytes.  This method will
       * block until some input is available.
       * @param b the buffer into which the data is read
       * @return  the actual number of bytes read, -1 is
       *          returned when the end of the stream is reached.
       * @exception IOException If an I/O error has occurred.
       */
      public int read(byte b[]) throws IOException;
  
      /**
       * Reads into an array of bytes.  This method will
       * block until some input is available.
       * @param b the buffer into which the data is read
       * @param off the start offset of the data
       * @param len the maximum number of bytes read
       * @return  the actual number of bytes read, -1 is
       *          returned when the end of the stream is reached.
       * @exception IOException If an I/O error has occurred.
       */
      public int read(byte b[], int off, int len) throws IOException;
  
      /**
       * Skips n bytes of input.
       * @param n the number of bytes to be skipped
       * @return  the actual number of bytes skipped.
       * @exception IOException If an I/O error has occurred.
       */
      public long skip(long n) throws IOException;
  
      /**
       * Returns the number of bytes that can be read
       * without blocking.
       * @return the number of available bytes.
       * @exception IOException If an I/O error has occurred.
       */
      public int available() throws IOException;
  
      /**
       * Closes the input stream. Must be called
       * to release any resources associated with
       * the stream.
       * @exception IOException If an I/O error has occurred.
       */
      public void close() throws IOException;
  }
  