Source for java.io.ObjectOutput

   1: /* ObjectOutput.java -- Interface for writing objects to a stream
   2:    Copyright (C) 1998, 2003 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10:  
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.io;
  40: 
  41: /**
  42:   * This interface extends <code>DataOutput</code> to provide the additional
  43:   * facility of writing object instances to a stream.  It also adds some
  44:   * additional methods to make the interface more 
  45:   * <code>OutputStream</code> like.
  46:   *
  47:   * @author Aaron M. Renn (arenn@urbanophile.com)
  48:   *
  49:   * @see DataOutput
  50:   */
  51: public interface ObjectOutput extends DataOutput
  52: {
  53:   /**
  54:     * This method writes the specified byte to the output stream.
  55:     *
  56:     * @param b The byte to write.
  57:     *
  58:     * @exception IOException If an error occurs.
  59:     */
  60:   void write(int b) throws IOException;
  61: 
  62:   /**
  63:     * This method writes all the bytes in the specified byte array to the
  64:     * output stream.
  65:     *
  66:     * @param buf The array of bytes to write.
  67:     * 
  68:     * @exception IOException If an error occurs.
  69:     */
  70:   void write(byte[] buf) throws IOException;
  71: 
  72:   /**
  73:     * This method writes <code>len</code> bytes from the specified array
  74:     * starting at index <code>offset</code> into that array.
  75:     *
  76:     * @param buf The byte array to write from.
  77:     * @param offset The index into the byte array to start writing from.
  78:     * @param len The number of bytes to write.
  79:     *
  80:     * @exception IOException If an error occurs.
  81:     */
  82:   void write(byte[] buf, int offset, int len) 
  83:     throws IOException;
  84: 
  85:   /**
  86:     * This method writes a object instance to a stream.  The format of the
  87:     * data written is determined by the actual implementation of this method
  88:     *
  89:     * @param obj The object to write
  90:     *
  91:     * @exception IOException If an error occurs
  92:     */
  93:   void writeObject(Object obj) throws IOException;
  94: 
  95:   /**
  96:     * This method causes any buffered data to be flushed out to the underlying
  97:     * stream
  98:     *
  99:     * @exception IOException If an error occurs
 100:     */
 101:   void flush() throws IOException;
 102: 
 103:   /**
 104:     * This method closes the underlying stream.
 105:     *
 106:     * @exception IOException If an error occurs
 107:     */
 108:   void close() throws IOException;
 109: 
 110: } // interface ObjectOutput