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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 23:37:09 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class CRC32</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/CRC32.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/util/zip/CheckedOutputStream.html"><B>PREV CLASS</B></A> <A HREF="../../../java/util/zip/Deflater.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="CRC32.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.util.zip</FONT><BR>Class CRC32</H2><PRE><A HREF="../../../java/lang/Object.html">java.lang.Object</A> | +--<B>java.util.zip.CRC32</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../java/util/zip/Checksum.html">Checksum</A></DD></DL><HR><DL><DT>public class <B>CRC32</B><DT>extends <A HREF="../../../java/lang/Object.html">Object</A><DT>implements <A HREF="../../../java/util/zip/Checksum.html">Checksum</A></DL><P>A class that can be used to compute the CRC-32 of a data stream.<P><DL><DT><B>See Also: </B><DD><A HREF="../../../java/util/zip/Checksum.html"><CODE>Checksum</CODE></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/util/zip/CRC32.html#CRC32()">CRC32</A></B>()</CODE><BR> Creates a new CRC32 class.</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> long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../java/util/zip/CRC32.html#getValue()">getValue</A></B>()</CODE><BR> Returns CRC-32 value.</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/util/zip/CRC32.html#reset()">reset</A></B>()</CODE><BR> Resets CRC-32 to initial value.</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/util/zip/CRC32.html#update(byte[])">update</A></B>(byte[] b)</CODE><BR> Updates checksum with specified 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/util/zip/CRC32.html#update(byte[], int, int)">update</A></B>(byte[] b, int off, int len)</CODE><BR> Updates CRC-32 with specified 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/util/zip/CRC32.html#update(int)">update</A></B>(int b)</CODE><BR> Updates CRC-32 with specified byte.</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.<A HREF="../../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../../java/lang/Object.html#wait(long, int)">wait</A></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="CRC32()"><!-- --></A><H3>CRC32</H3><PRE>public <B>CRC32</B>()</PRE><DL><DD>Creates a new CRC32 class.</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="update(int)"><!-- --></A><H3>update</H3><PRE>public void <B>update</B>(int b)</PRE><DL><DD>Updates CRC-32 with specified byte.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../../java/util/zip/Checksum.html#update(int)">update</A></CODE> in interface <CODE><A HREF="../../../java/util/zip/Checksum.html">Checksum</A></CODE></DL></DD><DD>Following copied from interface: <CODE>java.util.zip.Checksum</CODE></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>b</CODE> - the byte to update the checksum with</DL></DD></DL><HR><A NAME="update(byte[], int, int)"><!-- --></A><H3>update</H3><PRE>public void <B>update</B>(byte[] b, int off, int len)</PRE><DL><DD>Updates CRC-32 with specified array of bytes.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../../java/util/zip/Checksum.html#update(byte[], int, int)">update</A></CODE> in interface <CODE><A HREF="../../../java/util/zip/Checksum.html">Checksum</A></CODE></DL></DD><DD>Following copied from interface: <CODE>java.util.zip.Checksum</CODE></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>b</CODE> - the byte array to update the checksum with<DD><CODE>off</CODE> - the start offset of the data<DD><CODE>len</CODE> - the number of bytes to use for the update</DL></DD></DL><HR><A NAME="update(byte[])"><!-- --></A><H3>update</H3><PRE>public void <B>update</B>(byte[] b)</PRE><DL><DD>Updates checksum with specified array of bytes.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>the</CODE> - array of bytes to update the checksum with</DL></DD></DL><HR><A NAME="reset()"><!-- --></A><H3>reset</H3><PRE>public void <B>reset</B>()</PRE><DL><DD>Resets CRC-32 to initial value.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../../java/util/zip/Checksum.html#reset()">reset</A></CODE> in interface <CODE><A HREF="../../../java/util/zip/Checksum.html">Checksum</A></CODE></DL></DD></DL><HR><A NAME="getValue()"><!-- --></A><H3>getValue</H3><PRE>public long <B>getValue</B>()</PRE><DL><DD>Returns CRC-32 value.<DD><DL><DT><B>Specified by: </B><DD><CODE><A HREF="../../../java/util/zip/Checksum.html#getValue()">getValue</A></CODE> in interface <CODE><A HREF="../../../java/util/zip/Checksum.html">Checksum</A></CODE></DL></DD><DD>Following copied from interface: <CODE>java.util.zip.Checksum</CODE></DD><DD><DL><DT><B>Returns:</B><DD>the current checksum value</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/CRC32.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD 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