timeseriesdemo2.java

本程序主要是实现了JFreeChart的图形显示！

package com.kai.jfc.util;

import java.awt.Dimension;
import java.util.ArrayList;

import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

import com.kai.bean.DateBean;
import com.kai.jfc.conn.FindData;

/**
 *****************************************
 *********** 与其坐而议，不如起而行 **********
 *****************************************
 * 类文件：TimeSeriesDemo2.java
 * @author 作者: 王凯 E-mail: [e-mail]
 * @version 创建时间：Jan 19, 2009 2:42:40 PM
 * 类 TimeSeriesDemo2 的作用：
 */

public class TimeSeriesDemo2 extends ApplicationFrame
{

    public TimeSeriesDemo2(String s)
    {
        super(s);
        XYDataset xydataset = createDataset();
        JFreeChart jfreechart = createChart(xydataset);
        ChartPanel chartpanel = new ChartPanel(jfreechart);
        chartpanel.setPreferredSize(new Dimension(500, 270));
        setContentPane(chartpanel);
    }

    private static XYDataset createDataset()
    {
        TimeSeries timeseries = new TimeSeries("Quarterly Data", org.jfree.data.time.Month.class);
//        timeseries.add(new Month(1, 2001), 500);
        //(iBig >= iSmall)?true:false;
        ArrayList lists = new FindData().findData();
		for(int i = 0;i<lists.size();i++)
		{
			DateBean bean = (DateBean) lists.get(i);
//			timeseries.add(new Month(bean.getMonth(), bean.getYear()), bean.getDate());
			timeseries.add(new Month(bean.getMonth(), bean.getYear()), bean.getDate() == 0? null : bean.getDate());
		}
        TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(timeseries);
        return timeseriescollection;
    }

    private static JFreeChart createChart(XYDataset xydataset)
    {
        JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("Time Series Demo 2", "Time", "Value", xydataset, true, true, false);
        XYPlot xyplot = (XYPlot)jfreechart.getPlot();
        xyplot.addRangeMarker(new ValueMarker(550D));
        return jfreechart;
    }
    public static JPanel createDemoPanel()
    {
        JFreeChart jfreechart = createChart(createDataset());
        return new ChartPanel(jfreechart);
    }

    public static void main(String args[])
    {
        TimeSeriesDemo2 timeseriesdemo2 = new TimeSeriesDemo2("Time Series Demo 2");
        timeseriesdemo2.pack();
        RefineryUtilities.centerFrameOnScreen(timeseriesdemo2);
        timeseriesdemo2.setVisible(true);
    }
}