Help ON Using Applets

Question

Hello,
I've written an applet that is supposed to allow users to use my program on the Internet. The applet works alright but the problem is that when the applet containing the program is loaded, the functions(close, open file, and so on) doesn't work. Can somebody help to resolve this? Please go to www.geocities/keito30582 to view the applet. PLS help

Answer 1

public class DTApplet extends Applet
implements ActionListener, Observer
DecisionTable dt; //DT
Frame mainFrame;
int posx, posy;
boolean listEm;
Font btnFont;
String name = "DT";
public DTApplet()
setSize(100,200);
public void init() {
btnFont = new Font("SansSerif", Font.BOLD, 14);
posx = 14;
posy = 14;
setLayout(new GridLayout(0,1,2,2));
setBackground(new Color(0x0FFEECC));
Panel p1;
Button btn;
p1 = new Panel();
p1.setLayout(new FlowLayout(FlowLayout.LEFT));
btn = new Button(name);
btn.setFont(btnFont);
btn.setActionCommand(name);
btn.addActionListener(this);
p1.add(btn);
add(p1);
try {
String list_em = getParameter("list");
if (list_em == null)
list_em = getParameter("preset");
if (list_em == null)
list_em = getParameter("presetlist");
if (list_em == null || list_em.equals("0") || list_em.equals("false"))
listEm = false;
else
listEm = true;
catch (NullPointerException npe) { }
public void actionPerformed(ActionEvent e) {
String nam = e.getActionCommand();
int i;
String title = "Decision Table ";
Frame f = new Frame(title);
DecisionTable dt = new DecisionTable();
f.add("Center", dt);
f.pack();
f.setResizable(false);
f.setLocation(posx, posy);
posx += 12;
posy += 10;
canvasesUp += 1;
f.show();
public void update(Observable o, Object arg) {
if (arg != null && arg instanceof URL) {
getAppletContext().showDocument((URL)arg, "sd");
return;
public int canvasesUp = 0;
static Frame f;
static DTApplet sa;
public static void main(String []args) {
f = new Frame("DT");
sa = new DTApplet();
if (args.length > 0) sa.listEm = true;
f.add("Center",sa);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
if (sa.canvasesUp > 0) {
try {
Toolkit.getDefaultToolkit().beep();
} catch (SecurityException se) { }
else
System.exit(0);
sa.init();
sa.start();
f.pack();
f.show();