| /* ObjectOutput.java -- Interface for writing objects to a stream |
| Copyright (C) 1998 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| As a special exception, if you link this library with other files to |
| produce an executable, this library does not by itself cause the |
| resulting executable to be covered by the GNU General Public License. |
| This exception does not however invalidate any other reasons why the |
| executable file might be covered by the GNU General Public License. */ |
| |
| |
| package java.io; |
| |
| /** |
| * This interface extends <code>DataOutput</code> to provide the additional |
| * facility of writing object instances to a stream. It also adds some |
| * additional methods to make the interface more <code>OutputStream</code> like. |
| * |
| * @version 0.0 |
| * |
| * @author Aaron M. Renn (arenn@urbanophile.com) |
| */ |
| public abstract interface ObjectOutput extends DataOutput |
| { |
| |
| |
| /** |
| * This method writes the specified byte to the output stream. |
| * |
| * @param b The byte to write. |
| * |
| * @exception IOException If an error occurs. |
| */ |
| public abstract void |
| write(int b) throws IOException; |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method writes all the bytes in the specified byte array to the |
| * output stream. |
| * |
| * @param buf The array of bytes to write. |
| * |
| * @exception IOException If an error occurs. |
| */ |
| public abstract void |
| write(byte[] buf) throws IOException; |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method writes <code>len</code> bytes from the specified array |
| * starting at index <code>offset</code> into that array. |
| * |
| * @param buf The byte array to write from. |
| * @param offset The index into the byte array to start writing from. |
| * @param len The number of bytes to write. |
| * |
| * @exception IOException If an error occurs. |
| */ |
| public abstract void |
| write(byte[] buf, int offset, int len) throws IOException; |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method writes a object instance to a stream. The format of the |
| * data written is determined by the actual implementation of this method |
| * |
| * @param obj The object to write |
| * |
| * @exception IOException If an error occurs |
| */ |
| public abstract void |
| writeObject(Object obj) throws IOException; |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method causes any buffered data to be flushed out to the underlying |
| * stream |
| * |
| * @exception IOException If an error occurs |
| */ |
| public abstract void |
| flush() throws IOException; |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method closes the underlying stream. |
| * |
| * @exception IOException If an error occurs |
| */ |
| public abstract void |
| close() throws IOException; |
| |
| } // interface ObjectOutput |
| |