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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 16:42:29 BST 2004 --><TITLE>DateAxis (JFreeChart Class Library (version 0.9.20))</TITLE><META NAME="keywords" CONTENT="org.jfree.chart.axis.DateAxis class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="DateAxis (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/chart/axis/CyclicNumberAxis.CycleBoundTick.html" title="class in org.jfree.chart.axis"><B>PREV CLASS</B></A> <A HREF="../../../../org/jfree/chart/axis/DateTick.html" title="class in org.jfree.chart.axis"><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="DateAxis.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 | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <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.chart.axis</FONT><BR>Class DateAxis</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/jfree/chart/axis/Axis.html" title="class in org.jfree.chart.axis">org.jfree.chart.axis.Axis</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">org.jfree.chart.axis.ValueAxis</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.jfree.chart.axis.DateAxis</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable</DD></DL><HR><DL><DT>public class <B>DateAxis</B><DT>extends <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A><DT>implements java.lang.Cloneable, java.io.Serializable</DL><P>The base class for axes that display dates. <P> You will find it easier to understand how this axis works if you bear in mind that it really displays/measures integer (or long) data, where the integers are milliseconds since midnight, 1-Jan-1970. When displaying tick labels, the millisecond values are converted back to dates using a <code>DateFormat</code> instance. <P> You can also create a <A HREF="../../../../org/jfree/chart/axis/Timeline.html" title="interface in org.jfree.chart.axis"><CODE>Timeline</CODE></A> and supply in the constructor to create an axis that only contains certain domain values. For example, this allows you to create a date axis that only contains working days.<P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.jfree.chart.axis.DateAxis">Serialized Form</A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.util.Date</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DEFAULT_ANCHOR_DATE">DEFAULT_ANCHOR_DATE</A></B></CODE><BR> The default anchor date.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DEFAULT_AUTO_RANGE_MINIMUM_SIZE_IN_MILLISECONDS">DEFAULT_AUTO_RANGE_MINIMUM_SIZE_IN_MILLISECONDS</A></B></CODE><BR> The default minimum auto range size.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../../org/jfree/data/DateRange.html" title="class in org.jfree.data">DateRange</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DEFAULT_DATE_RANGE">DEFAULT_DATE_RANGE</A></B></CODE><BR> The default axis range.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../../org/jfree/chart/axis/DateTickUnit.html" title="class in org.jfree.chart.axis">DateTickUnit</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DEFAULT_DATE_TICK_UNIT">DEFAULT_DATE_TICK_UNIT</A></B></CODE><BR> The default date tick unit.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_org.jfree.chart.axis.ValueAxis"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class org.jfree.chart.axis.<A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_AUTO_RANGE">DEFAULT_AUTO_RANGE</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_AUTO_RANGE_MINIMUM_SIZE">DEFAULT_AUTO_RANGE_MINIMUM_SIZE</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_AUTO_TICK_UNIT_SELECTION">DEFAULT_AUTO_TICK_UNIT_SELECTION</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_INVERTED">DEFAULT_INVERTED</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_LOWER_BOUND">DEFAULT_LOWER_BOUND</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_LOWER_MARGIN">DEFAULT_LOWER_MARGIN</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_RANGE">DEFAULT_RANGE</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_UPPER_BOUND">DEFAULT_UPPER_BOUND</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#DEFAULT_UPPER_MARGIN">DEFAULT_UPPER_MARGIN</A>, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html#MAXIMUM_TICK_COUNT">MAXIMUM_TICK_COUNT</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_org.jfree.chart.axis.Axis"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class org.jfree.chart.axis.<A HREF="../../../../org/jfree/chart/axis/Axis.html" title="class in org.jfree.chart.axis">Axis</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_LABEL_FONT">DEFAULT_AXIS_LABEL_FONT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_LABEL_INSETS">DEFAULT_AXIS_LABEL_INSETS</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_LABEL_PAINT">DEFAULT_AXIS_LABEL_PAINT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_LINE_PAINT">DEFAULT_AXIS_LINE_PAINT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_LINE_STROKE">DEFAULT_AXIS_LINE_STROKE</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_AXIS_VISIBLE">DEFAULT_AXIS_VISIBLE</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_LABEL_FONT">DEFAULT_TICK_LABEL_FONT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_LABEL_INSETS">DEFAULT_TICK_LABEL_INSETS</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_LABEL_PAINT">DEFAULT_TICK_LABEL_PAINT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_LABELS_VISIBLE">DEFAULT_TICK_LABELS_VISIBLE</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_MARK_INSIDE_LENGTH">DEFAULT_TICK_MARK_INSIDE_LENGTH</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_MARK_OUTSIDE_LENGTH">DEFAULT_TICK_MARK_OUTSIDE_LENGTH</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_MARK_PAINT">DEFAULT_TICK_MARK_PAINT</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_MARK_STROKE">DEFAULT_TICK_MARK_STROKE</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#DEFAULT_TICK_MARKS_VISIBLE">DEFAULT_TICK_MARKS_VISIBLE</A>, <A HREF="../../../../org/jfree/chart/axis/Axis.html#LOGGER">LOGGER</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><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="../../../../org/jfree/chart/axis/DateAxis.html#DateAxis()">DateAxis</A></B>()</CODE><BR> Default constructor.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DateAxis(java.lang.String)">DateAxis</A></B>(java.lang.String label)</CODE><BR> Creates a date axis.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#DateAxis(java.lang.String, org.jfree.chart.axis.Timeline)">DateAxis</A></B>(java.lang.String label, <A HREF="../../../../org/jfree/chart/axis/Timeline.html" title="interface in org.jfree.chart.axis">Timeline</A> timeline)</CODE><BR> Creates a date axis.</TD></TR></TABLE> <!-- ========== 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>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/axis/DateAxis.html#autoAdjustRange()">autoAdjustRange</A></B>()</CODE><BR>⌨️ 快捷键说明
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