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ExpandableBuffer (HttpComponents Core 4.2.2 API)
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org.apache.http.nio.util</FONT>
<BR>
Class ExpandableBuffer</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.http.nio.util.ExpandableBuffer</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html" title="interface in org.apache.http.nio.util">BufferInfo</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../org/apache/http/impl/nio/reactor/SessionInputBufferImpl.html" title="class in org.apache.http.impl.nio.reactor">SessionInputBufferImpl</A>, <A HREF="../../../../../org/apache/http/impl/nio/reactor/SessionOutputBufferImpl.html" title="class in org.apache.http.impl.nio.reactor">SessionOutputBufferImpl</A>, <A HREF="../../../../../org/apache/http/nio/util/SharedInputBuffer.html" title="class in org.apache.http.nio.util">SharedInputBuffer</A>, <A HREF="../../../../../org/apache/http/nio/util/SharedOutputBuffer.html" title="class in org.apache.http.nio.util">SharedOutputBuffer</A>, <A HREF="../../../../../org/apache/http/nio/util/SimpleInputBuffer.html" title="class in org.apache.http.nio.util">SimpleInputBuffer</A>, <A HREF="../../../../../org/apache/http/nio/util/SimpleOutputBuffer.html" title="class in org.apache.http.nio.util">SimpleOutputBuffer</A></DD>
</DL>
<HR>
<DL>
<DT><PRE><FONT SIZE="-1"><A HREF="../../../../../org/apache/http/annotation/NotThreadSafe.html" title="annotation in org.apache.http.annotation">@NotThreadSafe</A>
</FONT>public class <B>ExpandableBuffer</B><DT>extends <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../../org/apache/http/io/BufferInfo.html" title="interface in org.apache.http.io">BufferInfo</A>, <A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html" title="interface in org.apache.http.nio.util">BufferInfo</A></DL>
</PRE>
<P>
A buffer that expand its capacity on demand using <A HREF="../../../../../org/apache/http/nio/util/ByteBufferAllocator.html" title="interface in org.apache.http.nio.util"><CODE>ByteBufferAllocator</CODE></A>
interface. Internally, this class is backed by an instance of
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/nio/ByteBuffer.html" title="class or interface in java.nio"><CODE>ByteBuffer</CODE></A>.
<p>
This class is not thread safe.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>4.0</DD>
</DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
<A NAME="field_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Field Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/nio/ByteBuffer.html" title="class or interface in java.nio">ByteBuffer</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#buffer">buffer</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#INPUT_MODE">INPUT_MODE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#OUTPUT_MODE">OUTPUT_MODE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#ExpandableBuffer(int, org.apache.http.nio.util.ByteBufferAllocator)">ExpandableBuffer</A></B>(int&nbsp;buffersize,
<A HREF="../../../../../org/apache/http/nio/util/ByteBufferAllocator.html" title="interface in org.apache.http.nio.util">ByteBufferAllocator</A>&nbsp;allocator)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Allocates buffer of the given size using the given allocator.</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#available()">available</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns available capacity of this buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#capacity()">capacity</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the total capacity of this buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#clear()">clear</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#ensureCapacity(int)">ensureCapacity</A></B>(int&nbsp;requiredCapacity)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ensures the buffer can accommodate the required capacity.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#expand()">expand</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expands buffer's capacity.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#getMode()">getMode</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the current mode:</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#hasData()">hasData</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines if the buffer contains data.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#length()">length</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the length of this buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#setInputMode()">setInputMode</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets input mode.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#setOutputMode()">setOutputMode</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets output mode.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#toString()">toString</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ FIELD DETAIL =========== -->
<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="INPUT_MODE"><!-- --></A><H3>
INPUT_MODE</H3>
<PRE>
public static final int <B>INPUT_MODE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.http.nio.util.ExpandableBuffer.INPUT_MODE">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="OUTPUT_MODE"><!-- --></A><H3>
OUTPUT_MODE</H3>
<PRE>
public static final int <B>OUTPUT_MODE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.http.nio.util.ExpandableBuffer.OUTPUT_MODE">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="buffer"><!-- --></A><H3>
buffer</H3>
<PRE>
protected <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/nio/ByteBuffer.html" title="class or interface in java.nio">ByteBuffer</A> <B>buffer</B></PRE>
<DL>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="ExpandableBuffer(int, org.apache.http.nio.util.ByteBufferAllocator)"><!-- --></A><H3>
ExpandableBuffer</H3>
<PRE>
public <B>ExpandableBuffer</B>(int&nbsp;buffersize,
<A HREF="../../../../../org/apache/http/nio/util/ByteBufferAllocator.html" title="interface in org.apache.http.nio.util">ByteBufferAllocator</A>&nbsp;allocator)</PRE>
<DL>
<DD>Allocates buffer of the given size using the given allocator.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>buffersize</CODE> - the buffer size.<DD><CODE>allocator</CODE> - allocator to be used to allocate <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/nio/ByteBuffer.html" title="class or interface in java.nio"><CODE>ByteBuffer</CODE></A>s.</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Detail</B></FONT></TH>
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</TABLE>
<A NAME="getMode()"><!-- --></A><H3>
getMode</H3>
<PRE>
protected int <B>getMode</B>()</PRE>
<DL>
<DD>Returns the current mode:
<p>
<A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#INPUT_MODE"><CODE>INPUT_MODE</CODE></A>: the buffer is in the input mode.
<p>
<A HREF="../../../../../org/apache/http/nio/util/ExpandableBuffer.html#OUTPUT_MODE"><CODE>OUTPUT_MODE</CODE></A>: the buffer is in the output mode.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>current input/output mode.</DL>
</DD>
</DL>
<HR>
<A NAME="setOutputMode()"><!-- --></A><H3>
setOutputMode</H3>
<PRE>
protected void <B>setOutputMode</B>()</PRE>
<DL>
<DD>Sets output mode. The buffer can now be read from.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setInputMode()"><!-- --></A><H3>
setInputMode</H3>
<PRE>
protected void <B>setInputMode</B>()</PRE>
<DL>
<DD>Sets input mode. The buffer can now be written into.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="expand()"><!-- --></A><H3>
expand</H3>
<PRE>
protected void <B>expand</B>()</PRE>
<DL>
<DD>Expands buffer's capacity.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="ensureCapacity(int)"><!-- --></A><H3>
ensureCapacity</H3>
<PRE>
protected void <B>ensureCapacity</B>(int&nbsp;requiredCapacity)</PRE>
<DL>
<DD>Ensures the buffer can accommodate the required capacity.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>requiredCapacity</CODE> - </DL>
</DD>
</DL>
<HR>
<A NAME="capacity()"><!-- --></A><H3>
capacity</H3>
<PRE>
public int <B>capacity</B>()</PRE>
<DL>
<DD>Returns the total capacity of this buffer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html#capacity()">capacity</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html" title="interface in org.apache.http.nio.util">BufferInfo</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>total capacity.</DL>
</DD>
</DL>
<HR>
<A NAME="hasData()"><!-- --></A><H3>
hasData</H3>
<PRE>
public boolean <B>hasData</B>()</PRE>
<DL>
<DD>Determines if the buffer contains data.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><code>true</code> if there is data in the buffer,
<code>false</code> otherwise.</DL>
</DD>
</DL>
<HR>
<A NAME="length()"><!-- --></A><H3>
length</H3>
<PRE>
public int <B>length</B>()</PRE>
<DL>
<DD>Returns the length of this buffer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html#length()">length</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html" title="interface in org.apache.http.nio.util">BufferInfo</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>buffer length.</DL>
</DD>
</DL>
<HR>
<A NAME="available()"><!-- --></A><H3>
available</H3>
<PRE>
public int <B>available</B>()</PRE>
<DL>
<DD>Returns available capacity of this buffer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html#available()">available</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/http/nio/util/BufferInfo.html" title="interface in org.apache.http.nio.util">BufferInfo</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>buffer length.</DL>
</DD>
</DL>
<HR>
<A NAME="clear()"><!-- --></A><H3>
clear</H3>
<PRE>
protected void <B>clear</B>()</PRE>
<DL>
<DD>Clears buffer.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
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<DT><B>Overrides:</B><DD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A></CODE> in class <CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></DL>
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