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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_03) on Mon Jun 07 16:42:22 BST 2004 --><TITLE>Dataset (JFreeChart Class Library (version 0.9.20))</TITLE><META NAME="keywords" CONTENT="org.jfree.data.Dataset interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Dataset (JFreeChart Class Library (version 0.9.20))";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <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-all.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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../org/jfree/data/ContourDataset.html" title="interface in org.jfree.data"><B>PREV CLASS</B></A> <A HREF="../../../org/jfree/data/DatasetChangeListener.html" title="interface in org.jfree.data"><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="Dataset.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | 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><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.jfree.data</FONT><BR>Interface Dataset</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../org/jfree/data/statistics/BoxAndWhiskerCategoryDataset.html" title="interface in org.jfree.data.statistics">BoxAndWhiskerCategoryDataset</A>, <A HREF="../../../org/jfree/data/statistics/BoxAndWhiskerXYDataset.html" title="interface in org.jfree.data.statistics">BoxAndWhiskerXYDataset</A>, <A HREF="../../../org/jfree/data/CategoryDataset.html" title="interface in org.jfree.data">CategoryDataset</A>, <A HREF="../../../org/jfree/data/ContourDataset.html" title="interface in org.jfree.data">ContourDataset</A>, <A HREF="../../../org/jfree/data/gantt/GanttCategoryDataset.html" title="interface in org.jfree.data.gantt">GanttCategoryDataset</A>, <A HREF="../../../org/jfree/data/HighLowDataset.html" title="interface in org.jfree.data">HighLowDataset</A>, <A HREF="../../../org/jfree/data/IntervalCategoryDataset.html" title="interface in org.jfree.data">IntervalCategoryDataset</A>, <A HREF="../../../org/jfree/data/IntervalXYDataset.html" title="interface in org.jfree.data">IntervalXYDataset</A>, <A HREF="../../../org/jfree/data/IntervalXYZDataset.html" title="interface in org.jfree.data">IntervalXYZDataset</A>, <A HREF="../../../org/jfree/data/KeyedValueDataset.html" title="interface in org.jfree.data">KeyedValueDataset</A>, <A HREF="../../../org/jfree/data/KeyedValues2DDataset.html" title="interface in org.jfree.data">KeyedValues2DDataset</A>, <A HREF="../../../org/jfree/data/KeyedValuesDataset.html" title="interface in org.jfree.data">KeyedValuesDataset</A>, <A HREF="../../../org/jfree/data/MeterDataset.html" title="interface in org.jfree.data">MeterDataset</A>, <A HREF="../../../org/jfree/data/PieDataset.html" title="interface in org.jfree.data">PieDataset</A>, <A HREF="../../../org/jfree/data/SeriesDataset.html" title="interface in org.jfree.data">SeriesDataset</A>, <A HREF="../../../org/jfree/data/SignalsDataset.html" title="interface in org.jfree.data">SignalsDataset</A>, <A HREF="../../../org/jfree/data/statistics/StatisticalCategoryDataset.html" title="interface in org.jfree.data.statistics">StatisticalCategoryDataset</A>, <A HREF="../../../org/jfree/data/TableXYDataset.html" title="interface in org.jfree.data">TableXYDataset</A>, <A HREF="../../../org/jfree/data/ValueDataset.html" title="interface in org.jfree.data">ValueDataset</A>, <A HREF="../../../org/jfree/data/WindDataset.html" title="interface in org.jfree.data">WindDataset</A>, <A HREF="../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A>, <A HREF="../../../org/jfree/data/XYZDataset.html" title="interface in org.jfree.data">XYZDataset</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../org/jfree/data/AbstractDataset.html" title="class in org.jfree.data">AbstractDataset</A>, <A HREF="../../../org/jfree/data/AbstractIntervalXYDataset.html" title="class in org.jfree.data">AbstractIntervalXYDataset</A>, <A HREF="../../../org/jfree/data/AbstractSeriesDataset.html" title="class in org.jfree.data">AbstractSeriesDataset</A>, <A HREF="../../../org/jfree/data/AbstractXYDataset.html" title="class in org.jfree.data">AbstractXYDataset</A>, <A HREF="../../../org/jfree/data/AbstractXYZDataset.html" title="class in org.jfree.data">AbstractXYZDataset</A>, <A HREF="../../../org/jfree/data/CategoryTableXYDataset.html" title="class in org.jfree.data">CategoryTableXYDataset</A>, <A HREF="../../../org/jfree/data/CategoryToPieDataset.html" title="class in org.jfree.data">CategoryToPieDataset</A>, <A HREF="../../../org/jfree/data/CombinedDataset.html" title="class in org.jfree.data">CombinedDataset</A>, <A HREF="../../../org/jfree/chart/renderer/CyclicXYItemRenderer.OverwriteDataSet.html" title="class in org.jfree.chart.renderer">CyclicXYItemRenderer.OverwriteDataSet</A>, <A HREF="../../../org/jfree/data/statistics/DefaultBoxAndWhiskerCategoryDataset.html" title="class in org.jfree.data.statistics">DefaultBoxAndWhiskerCategoryDataset</A>, <A HREF="../../../org/jfree/data/statistics/DefaultBoxAndWhiskerXYDataset.html" title="class in org.jfree.data.statistics">DefaultBoxAndWhiskerXYDataset</A>, <A HREF="../../../org/jfree/data/DefaultCategoryDataset.html" title="class in org.jfree.data">DefaultCategoryDataset</A>, <A HREF="../../../org/jfree/data/DefaultContourDataset.html" title="class in org.jfree.data">DefaultContourDataset</A>, <A HREF="../../../org/jfree/data/DefaultHighLowDataset.html" title="class in org.jfree.data">DefaultHighLowDataset</A>, <A HREF="../../../org/jfree/data/DefaultIntervalCategoryDataset.html" title="class in org.jfree.data">DefaultIntervalCategoryDataset</A>, <A HREF="../../../org/jfree/data/DefaultKeyedValueDataset.html" title="class in org.jfree.data">DefaultKeyedValueDataset</A>, <A HREF="../../../org/jfree/data/DefaultKeyedValues2DDataset.html" title="class in org.jfree.data">DefaultKeyedValues2DDataset</A>, <A HREF="../../../org/jfree/data/DefaultKeyedValuesDataset.html" title="class in org.jfree.data">DefaultKeyedValuesDataset</A>, <A HREF="../../../org/jfree/data/DefaultMeterDataset.html" title="class in org.jfree.data">DefaultMeterDataset</A>, <A HREF="../../../org/jfree/data/DefaultPieDataset.html" title="class in org.jfree.data">DefaultPieDataset</A>, <A HREF="../../../org/jfree/data/statistics/DefaultStatisticalCategoryDataset.html" title="class in org.jfree.data.statistics">DefaultStatisticalCategoryDataset</A>, <A HREF="../../../org/jfree/data/DefaultTableXYDataset.html" title="class in org.jfree.data">DefaultTableXYDataset</A>, <A HREF="../../../org/jfree/data/DefaultValueDataset.html" title="class in org.jfree.data">DefaultValueDataset</A>, <A HREF="../../../org/jfree/data/DefaultWindDataset.html" title="class in org.jfree.data">DefaultWindDataset</A>, <A HREF="../../../org/jfree/data/time/DynamicTimeSeriesCollection.html" title="class in org.jfree.data.time">DynamicTimeSeriesCollection</A>, <A HREF="../../../org/jfree/data/statistics/HistogramDataset.html" title="class in org.jfree.data.statistics">HistogramDataset</A>, <A HREF="../../../org/jfree/data/JDBCXYDataset.html" title="class in org.jfree.data">JDBCXYDataset</A>, <A HREF="../../../org/jfree/data/MatrixSeriesCollection.html" title="class in org.jfree.data">MatrixSeriesCollection</A>, <A HREF="../../../org/jfree/data/OHLCDataset.html" title="class in org.jfree.data">OHLCDataset</A>, <A HREF="../../../org/jfree/data/SubSeriesDataset.html" title="class in org.jfree.data">SubSeriesDataset</A>, <A HREF="../../../org/jfree/data/gantt/TaskSeriesCollection.html" title="class in org.jfree.data.gantt">TaskSeriesCollection</A>, <A HREF="../../../org/jfree/data/time/TimePeriodValuesCollection.html" title="class in org.jfree.data.time">TimePeriodValuesCollection</A>, <A HREF="../../../org/jfree/data/time/TimeSeriesCollection.html" title="class in org.jfree.data.time">TimeSeriesCollection</A>, <A HREF="../../../org/jfree/data/time/TimeTableXYDataset.html" title="class in org.jfree.data.time">TimeTableXYDataset</A>, <A HREF="../../../org/jfree/data/XYBarDataset.html" title="class in org.jfree.data">XYBarDataset</A>, <A HREF="../../../org/jfree/data/XYSeriesCollection.html" title="class in org.jfree.data">XYSeriesCollection</A></DD></DL><HR><DL><DT>public interface <B>Dataset</B></DL><P>The base interface for data sets. <P> All datasets are required to support the <A HREF="../../../org/jfree/data/DatasetChangeEvent.html" title="class in org.jfree.data"><CODE>DatasetChangeEvent</CODE></A> mechanism by allowing listeners to register and receive notification of any changes to the dataset. <P> In addition, all datasets must belong to one (and only one) <A HREF="../../../org/jfree/data/DatasetGroup.html" title="class in org.jfree.data"><CODE>DatasetGroup</CODE></A>. The group object maintains a reader-writer lock which provides synchronised access to the datasets in multi-threaded code.<P><P><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><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="../../../org/jfree/data/Dataset.html#addChangeListener(org.jfree.data.DatasetChangeListener)">addChangeListener</A></B>(<A HREF="../../../org/jfree/data/DatasetChangeListener.html" title="interface in org.jfree.data">DatasetChangeListener</A> listener)</CODE><BR> Registers an object for notification of changes to the dataset.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../org/jfree/data/DatasetGroup.html" title="class in org.jfree.data">DatasetGroup</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/Dataset.html#getGroup()">getGroup</A></B>()</CODE><BR> Returns the dataset group.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD>⌨️ 快捷键说明
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