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Metric (stat4j API)
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<H2>
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net.sourceforge.stat4j</FONT>
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<BR>
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Class Metric</H2>
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<PRE>
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java.lang.Object
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<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>net.sourceforge.stat4j.Metric</B>
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</PRE>
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<DL>
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<DT><PRE>public class <B>Metric</B><DT>extends java.lang.Object</DL>
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</PRE>
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<P>
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Name: Metric.java
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Date: Aug 29, 2004
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Description:
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A metric is collected from a log either at a point in time (single reading) or
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over 2 points in time (dual reading). A dual reading enables deltas such as durations and
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memory usage to be calculated.
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A metric will only be generated for a statsictic if the log message matches the
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statistic filter. The filter also defines an optional expression for
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scaping user defined values from the log.
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A reading holds the time,free memory and a user defined
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value for a point in time.
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Typically metrics that require dual readings will be cached
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for the first reading and then sent to the statstic calculator once
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the second reading has been captured. The statistic defines the filters
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for each reading.
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Calculators may override caching by setting setApplyImmediate to true. RunningTotals are
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examples of calculators that must be sent metrics
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when a match occurs on either statisitic filter.
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Metrics may be collected across all threads or
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locally within a given thread (thread local). This
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is so that we can support metrics for a given call stack such
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as method duration and global metrics such as average user session
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duration.
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<P>
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<P>
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<DL>
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<DT><B>Author:</B></DT>
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<DD>Lara D'Abreo</DD>
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<DT><B>See Also:</B><DD><A HREF="../../../net/sourceforge/stat4j/Filter.html" title="class in net.sourceforge.stat4j"><CODE>Filter</CODE></A>,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j"><CODE>Reading</CODE></A>,
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<A HREF="../../../net/sourceforge/stat4j/Calculator.html" title="interface in net.sourceforge.stat4j"><CODE>Calculator</CODE></A>,
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<A HREF="../../../net/sourceforge/stat4j/Statistic.html" title="class in net.sourceforge.stat4j"><CODE>value scraped from the log taken at one or 2 points in time</CODE></A></DL>
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<HR>
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<P>
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<!-- =========== FIELD SUMMARY =========== -->
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<A NAME="field_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Field Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#firstReading">firstReading</A></B></CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#secondReading">secondReading</A></B></CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected java.lang.String</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#statisticName">statisticName</A></B></CODE>
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<BR>
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</TD>
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</TR>
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</TABLE>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<A NAME="constructor_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Constructor Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#Metric(java.lang.String, net.sourceforge.stat4j.Reading)">Metric</A></B>(java.lang.String statisticName,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> reading)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#Metric(java.lang.String, net.sourceforge.stat4j.Reading, net.sourceforge.stat4j.Reading)">Metric</A></B>(java.lang.String statisticName,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> first,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> second)</CODE>
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<BR>
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</TD>
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</TR>
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</TABLE>
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<!-- ========== METHOD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getFirstReading()">getFirstReading</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> double</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getReading(net.sourceforge.stat4j.Unit)">getReading</A></B>(<A HREF="../../../net/sourceforge/stat4j/Unit.html" title="class in net.sourceforge.stat4j">Unit</A> unit)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> double</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getReadingDelta(net.sourceforge.stat4j.Unit)">getReadingDelta</A></B>(<A HREF="../../../net/sourceforge/stat4j/Unit.html" title="class in net.sourceforge.stat4j">Unit</A> unit)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getSecondReading()">getSecondReading</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> java.lang.String</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getStatisticName()">getStatisticName</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> long</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#getTimestamp()">getTimestamp</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#hasFirstReading()">hasFirstReading</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#hasSecondReading()">hasSecondReading</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#isDual()">isDual</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#isSingle()">isSingle</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../net/sourceforge/stat4j/Metric.html#setSecondReading(net.sourceforge.stat4j.Reading)">setSecondReading</A></B>(<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> reading)</CODE>
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<BR>
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</TD>
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</TR>
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</TABLE>
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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</TR>
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</TABLE>
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<P>
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<!-- ============ FIELD DETAIL =========== -->
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<A NAME="field_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Field Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="statisticName"><!-- --></A><H3>
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statisticName</H3>
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<PRE>
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protected java.lang.String <B>statisticName</B></PRE>
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<DL>
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<DL>
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</DL>
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</DL>
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<HR>
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<A NAME="firstReading"><!-- --></A><H3>
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firstReading</H3>
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<PRE>
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protected <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> <B>firstReading</B></PRE>
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<DL>
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<DL>
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</DL>
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</DL>
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<HR>
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<A NAME="secondReading"><!-- --></A><H3>
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secondReading</H3>
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<PRE>
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protected <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> <B>secondReading</B></PRE>
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<DL>
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<DL>
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</DL>
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</DL>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="constructor_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Constructor Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="Metric(java.lang.String, net.sourceforge.stat4j.Reading)"><!-- --></A><H3>
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Metric</H3>
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<PRE>
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public <B>Metric</B>(java.lang.String statisticName,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> reading)</PRE>
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<DL>
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</DL>
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<HR>
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<A NAME="Metric(java.lang.String, net.sourceforge.stat4j.Reading, net.sourceforge.stat4j.Reading)"><!-- --></A><H3>
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Metric</H3>
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<PRE>
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public <B>Metric</B>(java.lang.String statisticName,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> first,
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<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> second)</PRE>
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<DL>
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</DL>
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<!-- ============ METHOD DETAIL ========== -->
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<A NAME="method_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Method Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="isSingle()"><!-- --></A><H3>
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isSingle</H3>
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<PRE>
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public boolean <B>isSingle</B>()</PRE>
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<DL>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="isDual()"><!-- --></A><H3>
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isDual</H3>
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<PRE>
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public boolean <B>isDual</B>()</PRE>
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<DL>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="hasFirstReading()"><!-- --></A><H3>
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hasFirstReading</H3>
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<PRE>
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public boolean <B>hasFirstReading</B>()</PRE>
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<DL>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="hasSecondReading()"><!-- --></A><H3>
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hasSecondReading</H3>
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|
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<PRE>
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|
427 |
public boolean <B>hasSecondReading</B>()</PRE>
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<DL>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="getSecondReading()"><!-- --></A><H3>
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436 |
getSecondReading</H3>
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|
437 |
<PRE>
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|
438 |
public <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> <B>getSecondReading</B>()</PRE>
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|
439 |
<DL>
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<DD><DL>
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<DT><B>Returns:</B><DD></DL>
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</DD>
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444 |
</DL>
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445 |
<HR>
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446 |
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<A NAME="getFirstReading()"><!-- --></A><H3>
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448 |
getFirstReading</H3>
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|
449 |
<PRE>
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|
450 |
public <A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> <B>getFirstReading</B>()</PRE>
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|
451 |
<DL>
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452 |
<DD><DL>
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453 |
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<DT><B>Returns:</B><DD></DL>
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455 |
</DD>
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|
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</DL>
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<HR>
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459 |
<A NAME="setSecondReading(net.sourceforge.stat4j.Reading)"><!-- --></A><H3>
|
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|
460 |
setSecondReading</H3>
|
|
|
461 |
<PRE>
|
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|
462 |
public void <B>setSecondReading</B>(<A HREF="../../../net/sourceforge/stat4j/Reading.html" title="class in net.sourceforge.stat4j">Reading</A> reading)</PRE>
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463 |
<DL>
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|
464 |
<DD><DL>
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465 |
<DT><B>Parameters:</B><DD><CODE>reading</CODE> - </DL>
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|
466 |
</DD>
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467 |
</DL>
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468 |
<HR>
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469 |
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470 |
<A NAME="getReadingDelta(net.sourceforge.stat4j.Unit)"><!-- --></A><H3>
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|
471 |
getReadingDelta</H3>
|
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|
472 |
<PRE>
|
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|
473 |
public double <B>getReadingDelta</B>(<A HREF="../../../net/sourceforge/stat4j/Unit.html" title="class in net.sourceforge.stat4j">Unit</A> unit)</PRE>
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474 |
<DL>
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<DD><DL>
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476 |
</DL>
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</DD>
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</DL>
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479 |
<HR>
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480 |
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481 |
<A NAME="getReading(net.sourceforge.stat4j.Unit)"><!-- --></A><H3>
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482 |
getReading</H3>
|
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|
483 |
<PRE>
|
|
|
484 |
public double <B>getReading</B>(<A HREF="../../../net/sourceforge/stat4j/Unit.html" title="class in net.sourceforge.stat4j">Unit</A> unit)</PRE>
|
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|
485 |
<DL>
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486 |
<DD><DL>
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</DL>
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</DD>
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489 |
</DL>
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<HR>
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491 |
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<A NAME="getTimestamp()"><!-- --></A><H3>
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493 |
getTimestamp</H3>
|
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|
494 |
<PRE>
|
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|
495 |
public long <B>getTimestamp</B>()</PRE>
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|
496 |
<DL>
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497 |
<DD><DL>
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498 |
</DL>
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499 |
</DD>
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500 |
</DL>
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<HR>
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502 |
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<A NAME="getStatisticName()"><!-- --></A><H3>
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|
504 |
getStatisticName</H3>
|
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|
505 |
<PRE>
|
|
|
506 |
public java.lang.String <B>getStatisticName</B>()</PRE>
|
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|
507 |
<DL>
|
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|
508 |
<DD><DL>
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|
509 |
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510 |
<DT><B>Returns:</B><DD></DL>
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|
511 |
</DD>
|
|
|
512 |
</DL>
|
|
|
513 |
<!-- ========= END OF CLASS DATA ========= -->
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