java 如何实现实时曲线图 今天接到任务要我做个根据时间做个曲线图,我现在没点思路,到网上想找个例子都不能运行,看不到效果,我希望谁能教我实现思路,用什么jar包或是什么工具之类的,如果有能够跑的小程序的话,更好,,希望高手帮帮我,谢谢! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 JFreeChart TimeSeriespackage demo;import java.awt.Color;import java.awt.Dimension;import java.text.SimpleDateFormat;import javax.swing.JPanel;import org.jfree.chart.ChartFactory;import org.jfree.chart.ChartPanel;import org.jfree.chart.JFreeChart;import org.jfree.chart.axis.DateAxis;import org.jfree.chart.plot.XYPlot;import org.jfree.chart.renderer.xy.XYItemRenderer;import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;import org.jfree.data.time.Month;import org.jfree.data.time.TimeSeries;import org.jfree.data.time.TimeSeriesCollection;import org.jfree.data.xy.XYDataset;import org.jfree.ui.ApplicationFrame;import org.jfree.ui.RectangleInsets;import org.jfree.ui.RefineryUtilities;public class TimeSeriesDemo1 extends ApplicationFrame{ public TimeSeriesDemo1(String paramString) { super(paramString); XYDataset localXYDataset = createDataset(); JFreeChart localJFreeChart = createChart(localXYDataset); ChartPanel localChartPanel = new ChartPanel(localJFreeChart, false); localChartPanel.setPreferredSize(new Dimension(500, 270)); localChartPanel.setMouseZoomable(true, false); setContentPane(localChartPanel); } private static JFreeChart createChart(XYDataset paramXYDataset) { JFreeChart localJFreeChart = ChartFactory.createTimeSeriesChart("Legal & General Unit Trust Prices", "Date", "Price Per Unit", paramXYDataset, true, true, false); localJFreeChart.setBackgroundPaint(Color.white); XYPlot localXYPlot = (XYPlot)localJFreeChart.getPlot(); localXYPlot.setBackgroundPaint(Color.lightGray); localXYPlot.setDomainGridlinePaint(Color.white); localXYPlot.setRangeGridlinePaint(Color.white); localXYPlot.setAxisOffset(new RectangleInsets(5.0D, 5.0D, 5.0D, 5.0D)); localXYPlot.setDomainCrosshairVisible(true); localXYPlot.setRangeCrosshairVisible(true); XYItemRenderer localXYItemRenderer = localXYPlot.getRenderer(); if (localXYItemRenderer instanceof XYLineAndShapeRenderer) { localObject = (XYLineAndShapeRenderer)localXYItemRenderer; ((XYLineAndShapeRenderer)localObject).setBaseShapesVisible(true); ((XYLineAndShapeRenderer)localObject).setBaseShapesFilled(true); } Object localObject = (DateAxis)localXYPlot.getDomainAxis(); ((DateAxis)localObject).setDateFormatOverride(new SimpleDateFormat("MMM-yyyy")); return ((JFreeChart)localJFreeChart); } private static XYDataset createDataset() { TimeSeries localTimeSeries1 = new TimeSeries("L&G European Index Trust", Month.class); localTimeSeries1.add(new Month(2, 2001), 181.80000000000001D); localTimeSeries1.add(new Month(3, 2001), 167.30000000000001D); localTimeSeries1.add(new Month(4, 2001), 153.80000000000001D); localTimeSeries1.add(new Month(5, 2001), 167.59999999999999D); localTimeSeries1.add(new Month(6, 2001), 158.80000000000001D); localTimeSeries1.add(new Month(7, 2001), 148.30000000000001D); localTimeSeries1.add(new Month(8, 2001), 153.90000000000001D); localTimeSeries1.add(new Month(9, 2001), 142.69999999999999D); localTimeSeries1.add(new Month(10, 2001), 123.2D); localTimeSeries1.add(new Month(11, 2001), 131.80000000000001D); localTimeSeries1.add(new Month(12, 2001), 139.59999999999999D); localTimeSeries1.add(new Month(1, 2002), 142.90000000000001D); localTimeSeries1.add(new Month(2, 2002), 138.69999999999999D); localTimeSeries1.add(new Month(3, 2002), 137.30000000000001D); localTimeSeries1.add(new Month(4, 2002), 143.90000000000001D); localTimeSeries1.add(new Month(5, 2002), 139.80000000000001D); localTimeSeries1.add(new Month(6, 2002), 137.0D); localTimeSeries1.add(new Month(7, 2002), 132.80000000000001D); TimeSeries localTimeSeries2 = new TimeSeries("L&G UK Index Trust", Month.class); localTimeSeries2.add(new Month(2, 2001), 129.59999999999999D); localTimeSeries2.add(new Month(3, 2001), 123.2D); localTimeSeries2.add(new Month(4, 2001), 117.2D); localTimeSeries2.add(new Month(5, 2001), 124.09999999999999D); localTimeSeries2.add(new Month(6, 2001), 122.59999999999999D); localTimeSeries2.add(new Month(7, 2001), 119.2D); localTimeSeries2.add(new Month(8, 2001), 116.5D); localTimeSeries2.add(new Month(9, 2001), 112.7D); localTimeSeries2.add(new Month(10, 2001), 101.5D); localTimeSeries2.add(new Month(11, 2001), 106.09999999999999D); localTimeSeries2.add(new Month(12, 2001), 110.3D); localTimeSeries2.add(new Month(1, 2002), 111.7D); localTimeSeries2.add(new Month(2, 2002), 111.0D); localTimeSeries2.add(new Month(3, 2002), 109.59999999999999D); localTimeSeries2.add(new Month(4, 2002), 113.2D); localTimeSeries2.add(new Month(5, 2002), 111.59999999999999D); localTimeSeries2.add(new Month(6, 2002), 108.8D); localTimeSeries2.add(new Month(7, 2002), 101.59999999999999D); TimeSeriesCollection localTimeSeriesCollection = new TimeSeriesCollection(); localTimeSeriesCollection.addSeries(localTimeSeries1); localTimeSeriesCollection.addSeries(localTimeSeries2); localTimeSeriesCollection.setDomainIsPointsInTime(true); return localTimeSeriesCollection; } public static JPanel createDemoPanel() { JFreeChart localJFreeChart = createChart(createDataset()); return new ChartPanel(localJFreeChart); } public static void main(String[] paramArrayOfString) { TimeSeriesDemo1 localTimeSeriesDemo1 = new TimeSeriesDemo1("Time Series Demo 1"); localTimeSeriesDemo1.pack(); RefineryUtilities.centerFrameOnScreen(localTimeSeriesDemo1); localTimeSeriesDemo1.setVisible(true); }} 高手帮忙! 集群下如何解决java内存限制问题 为什么我的视图数据在jsp中显示不出来? 我想把结果打印出来,但是现在只打印了SQL语句,帮我看看 请教,一个form两个提交动作应该怎么做? 求教一个关于时间的问题 请教:在struts中如何用一个按钮提交同一页面上的两个FORM中的数据? jbuilder+weblogic,利用jspsmartupload实现文件上传,jspsmartupload放在什么地方? 诚征女友!!! 关于pet store 的问题 急!!!在线等,使用hibernate 插入数据到mysql时报错。 想在jsp切入一个视频播放器,遇到点问题!!!
import java.awt.Dimension;
import java.text.SimpleDateFormat;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.time.Month;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;public class TimeSeriesDemo1 extends ApplicationFrame
{
public TimeSeriesDemo1(String paramString)
{
super(paramString);
XYDataset localXYDataset = createDataset();
JFreeChart localJFreeChart = createChart(localXYDataset);
ChartPanel localChartPanel = new ChartPanel(localJFreeChart, false);
localChartPanel.setPreferredSize(new Dimension(500, 270));
localChartPanel.setMouseZoomable(true, false);
setContentPane(localChartPanel);
} private static JFreeChart createChart(XYDataset paramXYDataset)
{
JFreeChart localJFreeChart = ChartFactory.createTimeSeriesChart("Legal & General Unit Trust Prices", "Date", "Price Per Unit", paramXYDataset, true, true, false);
localJFreeChart.setBackgroundPaint(Color.white);
XYPlot localXYPlot = (XYPlot)localJFreeChart.getPlot();
localXYPlot.setBackgroundPaint(Color.lightGray);
localXYPlot.setDomainGridlinePaint(Color.white);
localXYPlot.setRangeGridlinePaint(Color.white);
localXYPlot.setAxisOffset(new RectangleInsets(5.0D, 5.0D, 5.0D, 5.0D));
localXYPlot.setDomainCrosshairVisible(true);
localXYPlot.setRangeCrosshairVisible(true);
XYItemRenderer localXYItemRenderer = localXYPlot.getRenderer();
if (localXYItemRenderer instanceof XYLineAndShapeRenderer)
{
localObject = (XYLineAndShapeRenderer)localXYItemRenderer;
((XYLineAndShapeRenderer)localObject).setBaseShapesVisible(true);
((XYLineAndShapeRenderer)localObject).setBaseShapesFilled(true);
}
Object localObject = (DateAxis)localXYPlot.getDomainAxis();
((DateAxis)localObject).setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));
return ((JFreeChart)localJFreeChart);
} private static XYDataset createDataset()
{
TimeSeries localTimeSeries1 = new TimeSeries("L&G European Index Trust", Month.class);
localTimeSeries1.add(new Month(2, 2001), 181.80000000000001D);
localTimeSeries1.add(new Month(3, 2001), 167.30000000000001D);
localTimeSeries1.add(new Month(4, 2001), 153.80000000000001D);
localTimeSeries1.add(new Month(5, 2001), 167.59999999999999D);
localTimeSeries1.add(new Month(6, 2001), 158.80000000000001D);
localTimeSeries1.add(new Month(7, 2001), 148.30000000000001D);
localTimeSeries1.add(new Month(8, 2001), 153.90000000000001D);
localTimeSeries1.add(new Month(9, 2001), 142.69999999999999D);
localTimeSeries1.add(new Month(10, 2001), 123.2D);
localTimeSeries1.add(new Month(11, 2001), 131.80000000000001D);
localTimeSeries1.add(new Month(12, 2001), 139.59999999999999D);
localTimeSeries1.add(new Month(1, 2002), 142.90000000000001D);
localTimeSeries1.add(new Month(2, 2002), 138.69999999999999D);
localTimeSeries1.add(new Month(3, 2002), 137.30000000000001D);
localTimeSeries1.add(new Month(4, 2002), 143.90000000000001D);
localTimeSeries1.add(new Month(5, 2002), 139.80000000000001D);
localTimeSeries1.add(new Month(6, 2002), 137.0D);
localTimeSeries1.add(new Month(7, 2002), 132.80000000000001D);
TimeSeries localTimeSeries2 = new TimeSeries("L&G UK Index Trust", Month.class);
localTimeSeries2.add(new Month(2, 2001), 129.59999999999999D);
localTimeSeries2.add(new Month(3, 2001), 123.2D);
localTimeSeries2.add(new Month(4, 2001), 117.2D);
localTimeSeries2.add(new Month(5, 2001), 124.09999999999999D);
localTimeSeries2.add(new Month(6, 2001), 122.59999999999999D);
localTimeSeries2.add(new Month(7, 2001), 119.2D);
localTimeSeries2.add(new Month(8, 2001), 116.5D);
localTimeSeries2.add(new Month(9, 2001), 112.7D);
localTimeSeries2.add(new Month(10, 2001), 101.5D);
localTimeSeries2.add(new Month(11, 2001), 106.09999999999999D);
localTimeSeries2.add(new Month(12, 2001), 110.3D);
localTimeSeries2.add(new Month(1, 2002), 111.7D);
localTimeSeries2.add(new Month(2, 2002), 111.0D);
localTimeSeries2.add(new Month(3, 2002), 109.59999999999999D);
localTimeSeries2.add(new Month(4, 2002), 113.2D);
localTimeSeries2.add(new Month(5, 2002), 111.59999999999999D);
localTimeSeries2.add(new Month(6, 2002), 108.8D);
localTimeSeries2.add(new Month(7, 2002), 101.59999999999999D);
TimeSeriesCollection localTimeSeriesCollection = new TimeSeriesCollection();
localTimeSeriesCollection.addSeries(localTimeSeries1);
localTimeSeriesCollection.addSeries(localTimeSeries2);
localTimeSeriesCollection.setDomainIsPointsInTime(true);
return localTimeSeriesCollection;
} public static JPanel createDemoPanel()
{
JFreeChart localJFreeChart = createChart(createDataset());
return new ChartPanel(localJFreeChart);
} public static void main(String[] paramArrayOfString)
{
TimeSeriesDemo1 localTimeSeriesDemo1 = new TimeSeriesDemo1("Time Series Demo 1");
localTimeSeriesDemo1.pack();
RefineryUtilities.centerFrameOnScreen(localTimeSeriesDemo1);
localTimeSeriesDemo1.setVisible(true);
}
}