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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 May 30 13:46:52 EDT 2002 --><TITLE>J2ME RMI Optional Package Specification v1.0: Class UID</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" 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CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="UID.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.rmi.server</FONT><BR>Class UID</H2><PRE>java.lang.Object | +--<B>java.rmi.server.UID</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD></DL><HR><DL><DT>public final class <B>UID</B><DT>extends java.lang.Object<DT>implements java.io.Serializable</DL><P>Abstraction for creating identifiers that are unique with respect to the the host on which it is generated.<P><DL><DT><B>Since: </B><DD>JDK1.1</DD><DT><B>See Also: </B><DD><A HREF="../../../serialized-form.html#java.rmi.server.UID">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#UID()">UID</A></B>()</CODE><BR> Creates a pure identifier that is unique with respect to the host on which it is generated.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#UID(short)">UID</A></B>(short num)</CODE><BR> Creates a "well-known" ID.</TD></TR></TABLE> <!-- ========== 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> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object obj)</CODE><BR> Compares two <code>UID</code>s for content equality.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#hashCode()">hashCode</A></B>()</CODE><BR> Returns a hashcode for the <code>UID</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../java/rmi/server/UID.html">UID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#read(java.io.DataInput)">read</A></B>(java.io.DataInput in)</CODE><BR> Reads the <code>UID</code> from the input stream.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/rmi/server/UID.html#toString()">toString</A></B>()</CODE><BR> Returns the string representation of the <code>UID</code>.</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/rmi/server/UID.html#write(java.io.DataOutput)">write</A></B>(java.io.DataOutput out)</CODE><BR> Write the <code>UID</code> to output stream, <code>out</code>.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="UID()"><!-- --></A><H3>UID</H3><PRE>public <B>UID</B>()</PRE><DL><DD>Creates a pure identifier that is unique with respect to the host on which it is generated. This UID is unique under the following conditions: a) the machine takes more than one second to reboot, and b) the machine's clock is never set backward. In order to construct a UID that is globally unique, simply pair a UID with an InetAddress.<DD><DL><DT><B>Since: </B><DD>JDK1.1</DD></DL></DD></DL><HR><A NAME="UID(short)"><!-- --></A><H3>UID</H3><PRE>public <B>UID</B>(short num)</PRE><DL><DD>Creates a "well-known" ID. There are 2^16 -1 such possible well-known ids. An id generated via this constructor will not clash with any id generated via the default UID constructor which will generates a genuinely unique identifier with respect to this host.<DD><DL><DT><B>Parameters:</B><DD><CODE>num</CODE> - well known ID number<DT><B>Since: </B><DD>JDK1.1</DD></DL></DD></DL><!-- ============ 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="hashCode()"><!-- --></A><H3>hashCode</H3><PRE>public int <B>hashCode</B>()</PRE><DL><DD>Returns a hashcode for the <code>UID</code>. Two <code>UID</code>s will have the same hashcode if they are equal with respect to their content.<DD><DL><DT><B>Overrides:</B><DD><CODE>hashCode</CODE> in class <CODE>java.lang.Object</CODE></DL></DD><DD><DL><DT><B>Returns:</B><DD>the hashcode<DT><B>Since: </B><DD>JDK1.1</DD><DT><B>See Also: </B><DD><CODE>Hashtable</CODE></DL></DD></DL><HR><A NAME="equals(java.lang.Object)"><!-- --></A><H3>equals</H3><PRE>public boolean <B>equals</B>(java.lang.Object obj)</PRE><DL><DD>Compares two <code>UID</code>s for content equality.<DD><DL><DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>obj</CODE> - the Object to compare with<DT><B>Returns:</B><DD>true if these Objects are equal; false otherwise.<DT><B>Since: </B><DD>JDK1.1</DD><DT><B>See Also: </B><DD><CODE>Hashtable</CODE></DL></DD></DL><HR><A NAME="toString()"><!-- --></A><H3>toString</H3><PRE>public java.lang.String <B>toString</B>()</PRE><DL><DD>Returns the string representation of the <code>UID</code>.<DD><DL><DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL></DD><DD><DL><DT><B>Since: </B><DD>JDK1.1</DD></DL></DD></DL><HR><A NAME="write(java.io.DataOutput)"><!-- --></A><H3>write</H3><PRE>public void <B>write</B>(java.io.DataOutput out) throws java.io.IOException</PRE><DL><DD>Write the <code>UID</code> to output stream, <code>out</code>.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>out</CODE> - the output stream to which the <code>UID</code> is written<DT><B>Throws:</B><DD><CODE>java.io.IOException</CODE> - if writing the <code>UID</code> to the stream fails.<DT><B>Since: </B><DD>JDK1.1</DD></DL></DD></DL><HR><A NAME="read(java.io.DataInput)"><!-- --></A><H3>read</H3><PRE>public static <A HREF="../../../java/rmi/server/UID.html">UID</A> <B>read</B>(java.io.DataInput in) throws java.io.IOException</PRE><DL><DD>Reads the <code>UID</code> from the input stream.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>in</CODE> - the input stream<DT><B>Returns:</B><DD>the <code>UID</code><DT><B>Throws:</B><DD><CODE>java.io.IOException</CODE> - if uid could not be read (due to stream failure or malformed <code>UID</code>)<DT><B>Since: </B><DD>JDK1.1</DD></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="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>J2ME RMI Optional Package</EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../java/rmi/server/RMISocketFactory.html"><B>PREV CLASS</B></A> <A HREF="../../../java/rmi/server/UnicastRemoteObject.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="UID.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><font size="-1">Copyright 1994-2002 Sun Microsystems, Inc. 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