how to run a applet from browser

hi,

iam sending the code of an applet. it is working in cmd prompt,but not working from browser.

<APPLET CODE="SPlotfinal.class" codebase="/applets" archive="jfreechart-1.0.13.jar , jcommon-1.0.8.jar ,mysql-connector-java-5.0.8-bin.jar">
</APPLET>

iam getting error. plz suggest me the related code to execute from browser.

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Shape;
import java.util.*;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.util.ShapeUtilities;
import java.sql.*;

public class SPlotfinal extends ApplicationFrame {

    public SPlotfinal(String s) {
        super(s);
        JPanel jpanel = createDemoPanel();
        jpanel.setPreferredSize(new Dimension(640, 480));
        add(jpanel);
    }
     public static JPanel createDemoPanel() {
        JFreeChart jfreechart = ChartFactory.createScatterPlot(
            "Dot Plot ", "X", "Y", samplexydataset2(),
            PlotOrientation.VERTICAL, true, true, false);
        Shape cross = ShapeUtilities.createDiagonalCross(3, 1);
        XYPlot xyPlot = (XYPlot) jfreechart.getPlot();
        xyPlot.setDomainCrosshairVisible(true);
        xyPlot.setRangeCrosshairVisible(true);
        XYItemRenderer renderer = xyPlot.getRenderer();
        renderer.setSeriesShape(0, cross);
        renderer.setSeriesPaint(0, Color.red);
        return new ChartPanel(jfreechart);
    }

    private static XYDataset samplexydataset2() {
        int cols = 20;
        int rows = 20;
        double[][] values = new double[cols][rows];
        XYSeriesCollection xySeriesCollection = new XYSeriesCollection();
        XYSeries series = new XYSeries("GRAPH");
        Random rand = new Random();

    try
{

String connectionURL = "jdbc:mysql://localhost:3306/mysql";
Connection con;
Class.forName("com.mysql.jdbc.Driver");
// Get a Connection to the database
con = DriverManager.getConnection(connectionURL, "root", "root"); 
//Add the data into the database
String sql = "SELECT COUNT(*) FROM GRAPH";
Statement stm = con.createStatement();
stm.executeQuery(sql);
ResultSet rs= stm.getResultSet();

while (rs.next ()){

 int count=rs.getInt(1);
 System.out.println(count);
 String sql1 = "SELECT XAXIS,YAXIS FROM GRAPH";
 Statement stm1 = con.createStatement();
 stm1.executeQuery(sql1);
 ResultSet rs1= stm1.getResultSet();
  while (rs1.next ()){

 for(int k=0; k<=count; k++)
    {

               double x = rs1.getInt(1);
               double y = rs1.getInt(2);
               series.add(x, y);
            }
    }
}

}

catch(Exception e){
    System.out.println(e);
       }





        xySeriesCollection.addSeries(series);
        return xySeriesCollection;
    }

    public static void main(String args[]) {
        SPlotfinal scatterplotdemo4 = new SPlotfinal("GRAPH-KALYANI");
        scatterplotdemo4.pack();
        RefineryUtilities.centerFrameOnScreen(scatterplotdemo4);
        scatterplotdemo4.setVisible(true);
    }


       }

thank in advance,