Shap drawn in applet couldn't see in Browser

Question

shap drawn in applet couldn't see in Browser but could see in applet-viewer
why it happen?
here is the code :
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.awt.geom.*;
* GeneralPath shape rendered .
public class ShowTest
    extends JApplet {
  ArrayList groupList, lineList;
  MapCanvas canvas;
  public void init() {
    Container cp = getContentPane();
    BorderLayout bord = new BorderLayout();
    cp.setLayout(bord);
    cp.add(canvas = new MapCanvas(this), "Center");
    JPanel commandPanel = new JPanel();
    JButton connectServlet = new JButton("connect-Servlet");
    commandPanel.add(connectServlet);
    cp.add(commandPanel, "North");
    File file = new File("c:\\Landlock.txt");
    groupList = new ArrayList();
    double p[] = new double[2];
    StringTokenizer st;
    try {
      int count;
      String s;
      FileInputStream fin = new FileInputStream(file);
      InputStreamReader isr = new InputStreamReader(fin);
      BufferedReader br = new BufferedReader(isr);
      for (; (s = br.readLine()) != null; ) {
        lineList = new ArrayList();
        st = new StringTokenizer(s);
        count = Integer.parseInt(st.nextToken());
        //System.out.println(count);
        for (int i = 0; i < count; i++) {
          s = br.readLine();
          st = new StringTokenizer(s);
          for (int j = 0; j <= st.countTokens() && st.hasMoreTokens(); j++) {
            p[j] = Double.parseDouble(st.nextToken());
          lineList.add(new Point2D.Double(p[0], p[1]));
        groupList.add(lineList);
    catch (Exception e) {
      e.printStackTrace();
class MapCanvas
    extends Canvas {
  ShowTest applet;
  //change condition
  int m_nXLeft, m_nYTop;
  int m_nXRight, m_nYBottom;
  //change condition
  double m_nLXLeft = 0, m_nLYTop = 90;
  double m_nLXRight = 360, m_nLYBottom = -90;
  public MapCanvas(ShowTest app) {
    applet = app;
    setBackground(Color.yellow);
  BufferedImage img;
  public void update(Graphics g) {
    paint(g);
  public void paint(Graphics g) {
    m_nXLeft = getLocation().x;
    m_nYTop = getLocation().y;
    m_nXRight = m_nXLeft + getSize().width;
    m_nYBottom = m_nYTop + getSize().height;
    System.out.println("m_nXLeft " + m_nXLeft);
    System.out.println("m_nYTop " + m_nYTop);
    System.out.println("m_nXRight " + m_nXRight);
    System.out.println("m_nYBottom " + m_nYBottom);
    Graphics2D g2;
    int width = getSize().width;
    int height = getSize().height;
    img = (BufferedImage) createImage(width, height);
    g2 = img.createGraphics();
    g2.clearRect(0, 0, width, height);
    ArrayList lineList, group = applet.groupList;
    Point2D.Double pPoint;
    Point lpFirst = new Point(), lpSecond = new Point();
    GeneralPath p = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
    p.moveTo(33, 18.0f);
    p.lineTo(46.0f, 90.0f);
    p.lineTo(55.0f, 12.0f);
    p.lineTo(200.0f, 100.0f);
    p.lineTo(300.0f, 200.0f);
    p.closePath();
    g2.draw(p);
    g2.drawRect(101, 101, 100, 100);
    int size = group.size();
    GeneralPath coastPath;
    System.out.println("group.size()" + size);
    for (int i = 0; i < 1; i++) {
      coastPath = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
      lineList = (ArrayList) group.get(i);
      pPoint = (Point2D.Double) lineList.get(0);
      //System.out.println("pPoint.x"+pPoint.x+"pPoint.y"+pPoint.y);
      LoToPh(pPoint, lpFirst);
      coastPath.moveTo(lpFirst.x, lpFirst.y);
      //System.out.println("lpFirst.x " + lpFirst.x + " lpFirst.y" + lpFirst.y);
      //System.out.println("lineList.size() " + lineList.size() );
      for (int j = 0; j < lineList.size(); j++) {
        pPoint = (Point2D.Double) lineList.get(j);
        LoToPh(pPoint, lpSecond);
    coastPath.lineTo(lpSecond.x, lpSecond.y);
        System.out.println("lpSecond.x " + lpSecond.x + " lpSecond.y" + lpSecond.y);
      if (lpFirst.x == lpSecond.x && lpFirst.y == lpSecond.y) {
        coastPath.closePath();
      g2.draw(coastPath);
      g2.dispose();
    g.drawImage(img, 0, 0, null);
  public void LoToPh(Point2D.Double pp, Point lp) {
    //make some change
    double latitude = pp.x;
    int temp = (int) ( ( (latitude - m_nLXLeft) * (m_nXRight - m_nXLeft)) /
                      (m_nLXRight - m_nLXLeft));
    lp.x = temp + m_nXLeft;
    //System.out.println("lp.x"+lp.x);
    //make some change
    double longtitude = pp.y;
    temp = (int) ( ( (m_nLYTop - longtitude) * (m_nYBottom - m_nYTop)) /
                  (m_nLYTop - m_nLYBottom));
    lp.y = temp + m_nYTop;
}

Answer 1

Your IDE has an applet viewer that uses a JRE not available to the browser. If you're using MSIE, there's a built-in java 1.1 (yeah, one point one) runtime. You've just opened a real can of worms. See the article Launching Applets for an introduction.
http://www.MartinRinehart.com