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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:34:36 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Interface ObjectOutput</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ObjectOutput.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../java/io/ObjectInputValidation.html"><B>PREV CLASS</B></A> <A HREF="../../java/io/ObjectStreamConstants.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="ObjectOutput.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.io</FONT><BR>Interface ObjectOutput</H2><DL><DT><B>All Superinterfaces:</B> <DD><A HREF="../../java/io/DataOutput.html">DataOutput</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../java/io/ObjectOutputStream.html">ObjectOutputStream</A></DD></DL><HR><DL><DT>public interface <B>ObjectOutput</B><DT>extends <A HREF="../../java/io/DataOutput.html">DataOutput</A></DL><P>ObjectOutput extends the DataOutput interface to include writing of objects. DataOutput includes methods for output of primitive types, ObjectOutput extends that interface to include objects, arrays, and Strings.<P><DL><DT><B>Since: </B><DD>JDK1.1</DD><DT><B>See Also: </B><DD><A HREF="../../java/io/InputStream.html"><CODE>InputStream</CODE></A>, <A HREF="../../java/io/ObjectOutputStream.html"><CODE>ObjectOutputStream</CODE></A>, <A HREF="../../java/io/ObjectInputStream.html"><CODE>ObjectInputStream</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#close()">close</A></B>()</CODE><BR> Closes the stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#flush()">flush</A></B>()</CODE><BR> Flushes the stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#write(byte[])">write</A></B>(byte[] b)</CODE><BR> Writes an array of bytes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#write(byte[], int, int)">write</A></B>(byte[] b, int off, int len)</CODE><BR> Writes a sub array of bytes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#write(int)">write</A></B>(int b)</CODE><BR> Writes a byte.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/io/ObjectOutput.html#writeObject(java.lang.Object)">writeObject</A></B>(<A HREF="../../java/lang/Object.html">Object</A> obj)</CODE><BR> Write an object to the underlying storage or stream.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.io.DataOutput"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface java.io.<A HREF="../../java/io/DataOutput.html">DataOutput</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/io/DataOutput.html#writeBoolean(boolean)">writeBoolean</A>, <A HREF="../../java/io/DataOutput.html#writeByte(int)">writeByte</A>, <A HREF="../../java/io/DataOutput.html#writeBytes(java.lang.String)">writeBytes</A>, <A HREF="../../java/io/DataOutput.html#writeChar(int)">writeChar</A>, <A HREF="../../java/io/DataOutput.html#writeChars(java.lang.String)">writeChars</A>, <A HREF="../../java/io/DataOutput.html#writeDouble(double)">writeDouble</A>, <A HREF="../../java/io/DataOutput.html#writeFloat(float)">writeFloat</A>, <A HREF="../../java/io/DataOutput.html#writeInt(int)">writeInt</A>, <A HREF="../../java/io/DataOutput.html#writeLong(long)">writeLong</A>, <A HREF="../../java/io/DataOutput.html#writeShort(int)">writeShort</A>, <A HREF="../../java/io/DataOutput.html#writeUTF(java.lang.String)">writeUTF</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="writeObject(java.lang.Object)"><!-- --></A><H3>writeObject</H3><PRE>public void <B>writeObject</B>(<A HREF="../../java/lang/Object.html">Object</A> obj) throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Write an object to the underlying storage or stream. The class that implements this interface defines how the object is written.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>obj</CODE> - the object to be written<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - Any of the usual Input/Output related exceptions.</DL></DD></DL><HR><A NAME="write(int)"><!-- --></A><H3>write</H3><PRE>public void <B>write</B>(int b) throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Writes a byte. This method will block until the byte is actually written.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../java/io/DataOutput.html#write(int)">write</A></CODE> in interface <CODE><A HREF="../../java/io/DataOutput.html">DataOutput</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>b</CODE> - the byte<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - If an I/O error has occurred.</DL></DD></DL><HR><A NAME="write(byte[])"><!-- --></A><H3>write</H3><PRE>public void <B>write</B>(byte[] b) throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Writes an array of bytes. This method will block until the bytes are actually written.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../java/io/DataOutput.html#write(byte[])">write</A></CODE> in interface <CODE><A HREF="../../java/io/DataOutput.html">DataOutput</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>b</CODE> - the data to be written<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - If an I/O error has occurred.</DL></DD></DL><HR><A NAME="write(byte[], int, int)"><!-- --></A><H3>write</H3><PRE>public void <B>write</B>(byte[] b, int off, int len) throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Writes a sub array of bytes.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../java/io/DataOutput.html#write(byte[], int, int)">write</A></CODE> in interface <CODE><A HREF="../../java/io/DataOutput.html">DataOutput</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>b</CODE> - the data to be written<DD><CODE>off</CODE> - the start offset in the data<DD><CODE>len</CODE> - the number of bytes that are written<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - If an I/O error has occurred.</DL></DD></DL><HR><A NAME="flush()"><!-- --></A><H3>flush</H3><PRE>public void <B>flush</B>() throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Flushes the stream. This will write any buffered output bytes.<DD><DL></DL></DD><DD><DL><DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - If an I/O error has occurred.</DL></DD></DL><HR><A NAME="close()"><!-- --></A><H3>close</H3><PRE>public void <B>close</B>() throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Closes the stream. This method must be called to release any resources associated with the stream.<DD><DL></DL></DD><DD><DL><DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - If an I/O error has occurred.</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ObjectOutput.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. 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