128 lines
4.1 KiB
Java
128 lines
4.1 KiB
Java
/* ObjectOutput.java -- Interface for writing objects to a stream
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.io;
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/**
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* This interface extends <code>DataOutput</code> to provide the additional
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* facility of writing object instances to a stream. It also adds some
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* additional methods to make the interface more <code>OutputStream</code> like.
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*
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* @version 0.0
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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*/
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public interface ObjectOutput extends DataOutput
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{
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/**
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* This method writes the specified byte to the output stream.
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*
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* @param b The byte to write.
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*
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* @exception IOException If an error occurs.
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*/
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public abstract void
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write(int b) throws IOException;
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/*************************************************************************/
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/**
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* This method writes all the bytes in the specified byte array to the
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* output stream.
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*
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* @param buf The array of bytes to write.
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*
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* @exception IOException If an error occurs.
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*/
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public abstract void
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write(byte[] buf) throws IOException;
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/*************************************************************************/
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/**
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* This method writes <code>len</code> bytes from the specified array
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* starting at index <code>offset</code> into that array.
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*
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* @param buf The byte array to write from.
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* @param offset The index into the byte array to start writing from.
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* @param len The number of bytes to write.
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*
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* @exception IOException If an error occurs.
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*/
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public abstract void
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write(byte[] buf, int offset, int len) throws IOException;
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/*************************************************************************/
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/**
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* This method writes a object instance to a stream. The format of the
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* data written is determined by the actual implementation of this method
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*
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* @param obj The object to write
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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writeObject(Object obj) throws IOException;
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/*************************************************************************/
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/**
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* This method causes any buffered data to be flushed out to the underlying
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* stream
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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flush() throws IOException;
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/*************************************************************************/
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/**
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* This method closes the underlying stream.
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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close() throws IOException;
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} // interface ObjectOutput
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