Thread: how to using button to change linechart

This is code, but how the ability is pressing button"change chart", by at first of figure a get empty of sketch, after becoming to obtain data of curve sketch??

 
import java.awt.BorderLayout;
 
import java.awt.Dimension;
import java.awt.FlowLayout;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
 
import javax.swing.JButton;
import javax.swing.JPanel;
 
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.time.Day;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
public class ResponseChart extends ApplicationFrame {
 
  public static ArrayList mlist;
 
  public static ArrayList jlist;
 
  public static ArrayList lrlist;
 
  public static ArrayList bwlist;
 
  public static ArrayList dlist;
 
  public static ArrayList<String> datelist;
 
  public ResponseChart(String s) {
    super(s);
    JPanel content = new JPanel(new FlowLayout());
    JFreeChart jfreechart = createCombinedChart();
    JPanel toppanel = new JPanel(new BorderLayout()) ;
 
    ChartPanel chartpanel = new ChartPanel(jfreechart, true, true, true,
        true, true);
    JButton btn =new JButton("change chart");
 
          toppanel.setSize(400,400);
       toppanel.add(btn);
      content.add(toppanel,BorderLayout.NORTH);
 
    content.add(chartpanel, BorderLayout.SOUTH);
 
    chartpanel.setPreferredSize(new Dimension(500, 270));
    setContentPane(content);
  }
 
 
  public static JFreeChart createCombinedChart() {
 
 
    XYDataset xydataset1 = createdelayDataset();
    StandardXYItemRenderer standardxyitemrenderer1 = new StandardXYItemRenderer();
    NumberAxis numberaxis1 = new NumberAxis("price");
    numberaxis1.setAutoRangeIncludesZero(false);
    XYPlot xyplot1 = new XYPlot(xydataset1, null, numberaxis1,
        standardxyitemrenderer1);
    xyplot1.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
    XYDataset xydataset2 = createdelayDataset();
    StandardXYItemRenderer standardxyitemrenderer2 = new StandardXYItemRenderer();
    NumberAxis numberaxis2 = new NumberAxis("averagy");
    numberaxis2.setAutoRangeIncludesZero(false);
    XYPlot xyplot2 = new XYPlot(xydataset2, null, numberaxis2,
        standardxyitemrenderer2);
    xyplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
 
 
    CombinedDomainXYPlot combineddomainxyplot = new CombinedDomainXYPlot(
        new DateAxis("Year"));
    combineddomainxyplot.setGap(10D);
    combineddomainxyplot.add(xyplot1, 1);
    combineddomainxyplot.add(xyplot2, 1);
 
 
    combineddomainxyplot.setOrientation(PlotOrientation.VERTICAL);
    return new JFreeChart(null,
        JFreeChart.DEFAULT_TITLE_FONT, combineddomainxyplot, true);
  }
 
 
 
 
  private static IntervalXYDataset createDataset1() {
    mlist = jdbcmysql.getmlist(); 
    datelist = jdbcmysql.getdatelist(); //2009-10-26
    //TimeSeries series1 = new TimeSeries("Series 1", Day.class);
    TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    for(int i =0;i<mlist.size();i++)
    try {
       java.util.Date d  = new Date();
 
      String datestr = datelist.get(i).toString();
       d = formatter.parse(datestr);
      System.out.println("***************"+d  );
      double value = Double.parseDouble(mlist.get(i).toString());
      series1.add(new Hour(formatter.parse(datestr)), value);
 
    } catch (java.text.ParseException e) {
      // TODO 自動產生 catch 區塊
      e.printStackTrace();
    }
 
    return new TimeSeriesCollection(series1);
 
  }
 
  private static IntervalXYDataset createdelayDataset() {
    dlist = jdbcmysql.getdlist(); 
    datelist = jdbcmysql.getdatelist(); //2009-10-26
    //TimeSeries series1 = new TimeSeries("Series 1", Day.class);
    TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    for(int i =0;i<dlist.size();i++)
    try {
       java.util.Date d  = new Date();
 
      String datestr = datelist.get(i).toString();
       d = formatter.parse(datestr);
      System.out.println("***************"+d  );
      double value = Double.parseDouble(dlist.get(i).toString());
      series1.add(new Hour(formatter.parse(datestr)), value);
 
    } catch (java.text.ParseException e) {
      // TODO 自動產生 catch 區塊
      e.printStackTrace();
    }
 
    return new TimeSeriesCollection(series1);
 
  }
 
  public static void main(String args[]) {
     jdbcmysql db = new jdbcmysql();
 
     db.SelectTable();
    ResponseChart combinedxyplotdemo1 = new ResponseChart(
        "CombinedDomainXYPlot   Demo");
    combinedxyplotdemo1.pack();
    RefineryUtilities.centerFrameOnScreen(combinedxyplotdemo1);
    combinedxyplotdemo1.setVisible(true);
  }
}

If I understand your question correctly, you're JButton is not working? In your ResponseChart constructor you do not seem to have added a listener to the JButton. See How to Write an Action Listener (The Java™ Tutorials > Creating a GUI With JFC/Swing > Writing Event Listeners) and http://www.javaprogrammingforums.com...ava-swing.html

hi
i have modify my code as follows :

import java.awt.BorderLayout;
 
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
 
import javax.swing.JButton;
import javax.swing.JPanel;
 
 
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.time.Day;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
public class ResponseChart extends ApplicationFrame {
 
	public static ArrayList mlist;
 
	public static ArrayList jlist;
 
	public static ArrayList lrlist;
 
	public static ArrayList bwlist;
 
	public static ArrayList dlist;
 
	public static ArrayList<String> datelist;
 
 
	public ResponseChart(String s) {
		super(s);
		JPanel content = new JPanel(new FlowLayout());
		  JFreeChart jfreechart=createCombinedChart(); 
		JPanel toppanel = new JPanel(new BorderLayout()) ;
 
		ChartPanel chartpanel = new ChartPanel(jfreechart, true, true, true,
				true, true);
		JButton btn =new JButton("change chart");
		btn.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e) {
       		 jdbcmysql db = new jdbcmysql();
 
    		 db.SelectTable();
            	JFreeChart jfreechart = createCombinedChart();
            	ChartPanel	chartpanel = new ChartPanel(jfreechart, true, true, true,
        				true, true);
			System.out.println("You clicked the button");
		}
	}); 
 
 
 
	        toppanel.setSize(400,400);
	     toppanel.add(btn);
			content.add(toppanel,BorderLayout.NORTH);
 
		content.add(chartpanel, BorderLayout.SOUTH);
 
		chartpanel.setPreferredSize(new Dimension(500, 270));
		setContentPane(content);
	}
 
 
 
	public static JFreeChart createCombinedChart() {
 
 
		XYDataset xydataset1 = createdelayDataset();
		StandardXYItemRenderer standardxyitemrenderer1 = new StandardXYItemRenderer();
		NumberAxis numberaxis1 = new NumberAxis("price");
		numberaxis1.setAutoRangeIncludesZero(false);
		XYPlot xyplot1 = new XYPlot(xydataset1, null, numberaxis1,
				standardxyitemrenderer1);
		xyplot1.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
		XYDataset xydataset2 = createdelayDataset();
		StandardXYItemRenderer standardxyitemrenderer2 = new StandardXYItemRenderer();
		NumberAxis numberaxis2 = new NumberAxis("averagy");
		numberaxis2.setAutoRangeIncludesZero(false);
		XYPlot xyplot2 = new XYPlot(xydataset2, null, numberaxis2,
				standardxyitemrenderer2);
		xyplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
 
 
		CombinedDomainXYPlot combineddomainxyplot = new CombinedDomainXYPlot(
				new DateAxis("Year"));
		combineddomainxyplot.setGap(10D);
		combineddomainxyplot.add(xyplot1, 1);
		combineddomainxyplot.add(xyplot2, 1);
 
 
		combineddomainxyplot.setOrientation(PlotOrientation.VERTICAL);
		return new JFreeChart(null,
				JFreeChart.DEFAULT_TITLE_FONT, combineddomainxyplot, true);
	}
 
 
 
 
	private static IntervalXYDataset createDataset1() {
		mlist = jdbcmysql.getmlist(); 
		datelist = jdbcmysql.getdatelist(); //2009-10-26
		//TimeSeries series1 = new TimeSeries("Series 1", Day.class);
		TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		for(int i =0;i<mlist.size();i++)
		try {
			 java.util.Date d  = new Date();
 
			String datestr = datelist.get(i).toString();
			 d = formatter.parse(datestr);
			System.out.println("***************"+d  );
			double value = Double.parseDouble(mlist.get(i).toString());
			series1.add(new Hour(formatter.parse(datestr)), value);
 
		} catch (java.text.ParseException e) {
			// TODO 自動產生 catch 區塊
			e.printStackTrace();
		}
 
		return new TimeSeriesCollection(series1);
 
	}
 
	private static IntervalXYDataset createdelayDataset() {
		dlist = jdbcmysql.getdlist(); 
		datelist = jdbcmysql.getdatelist(); //2009-10-26
		//TimeSeries series1 = new TimeSeries("Series 1", Day.class);
		TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		for(int i =0;i<dlist.size();i++)
		try {
			 java.util.Date d  = new Date();
 
			String datestr = datelist.get(i).toString();
			 d = formatter.parse(datestr);
			System.out.println("***************"+d  );
			double value = Double.parseDouble(dlist.get(i).toString());
			series1.add(new Hour(formatter.parse(datestr)), value);
 
		} catch (java.text.ParseException e) {
			// TODO 自動產生 catch 區塊
			e.printStackTrace();
		}
 
		return new TimeSeriesCollection(series1);
 
	}
 
 
 
	public static void main(String args[]) {
 
		ResponseChart combinedxyplotdemo1 = new ResponseChart(
				"CombinedDomainXYPlot   Demo");
		combinedxyplotdemo1.pack();
		RefineryUtilities.centerFrameOnScreen(combinedxyplotdemo1);
		combinedxyplotdemo1.setVisible(true);
	}
}

but still can't work , do you have any idea about it ?

Does your button fire (eg does it print out your debugging "You clicked the button")? My guess is that it does, but you create a new chartPanel without adding it to the GUI (and I'm also unclear of the changes you make, but thats beside the point). Solution 1 would be to not create a whole new chartpanel but rather just update the old one upon button click. Solution 2 would be to create the new chartpanel as this code demonstrates, and add it to the gui (make sure to call validate() on your frame to update the changes).