Implementation class on a button (rollover)

I am trying to change the image on a button when the mouse moves over it.
The implementation class property on the button is simply MyClass.
The java class file and both the alternative images are archived in a jar file and I have added the following lines to the base html file:
<applet name="letter"
     code="MyClass.class"
     archive="jars\letter.jar"
     width=37
     height=37>
<Param ....etc
</applet>
The jars directory is a subdirectory of the directory wherein the base html file resides.
It doesn't work - the button is blank.
If I put the above code straight into an html file with letter.jar in an appropriate subdirectory the image displays and changes OK.
Is it the button property syntax that is wrong? Or is the jar file in the wrong directory?
Thanks in advance for any hints.
Regards,
Pete

It all depends on how the Button is reading the image - is it from the codebase or the documentbase?
Have a look at the rollover button code in the 9i demos if you can (download from the OTN Forms Page). This looks in both places for the images.

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hello,
i am stuck on this piece of code and i think somebody here will be able to help me out :).
i have these classes.
ButtonPanel, Test.
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URgent help need.
i need to link the page together : by clicking the button on the index page.
it will show the revelant class file. I have try my ationPerformed method to the actionlistener, it cannot work.
Thanks in advance.
// class mtab
// the tab menu where it display the gui
import javax.swing.*;
import java.awt.*;
public class mtab {
private static final int frame_height = 480;
private static final int frame_width = 680;
public static void main (String [] args){
JFrame frame = new JFrame ("Mrt Timing System");
frame.setDefaultCloseOperationJFrame.EXIT_ON_CLOSE);
frame.setSize(frame_width,frame_height);
JTabbedPane tp = new JTabbedPane ();
tp.addTab("Mrt Timing System", new sample());
frame.setResizable(false);
frame.getContentPane().add(tp);
frame.setSize(680,480);
frame.show();
// index page
// class sample
import java.awt.*;
import java.awt.event.*;
import java.awt.Image;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import java.text.*;
import javax.swing.border.*;
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//button
private JButton TimingButton;
private JButton ViewButton;
private JButton FrequencyButton;
private JButton calculateButton;
private CardLayout mycard;
private JPanel SelectXPanel;
private JPanel SelectYPanel;
private JPanel SelectZPanel;
private JPanel bigFrame, mainPane;
// constructor
public sample() {
super(new BorderLayout());
//create the object
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TimingButton.addActionListener(this);
ViewButton = new JButton("View First and Last Train");
ViewButton.addActionListener(this);
FrequencyButton = new JButton("Show the Train Frequency");
FrequencyButton.addActionListener(this);
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//Lay out the button in a panel.
JPanel buttonPane = new JPanel(new GridLayout(3,0));
buttonPane.add(TimingButton);
buttonPane.add(ViewButton);
buttonPane.add(FrequencyButton);
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tfrequency x = new tfrequency();
fviewl2 y = new fviewl2 ();
timing z = new timing ();
JPanel SelectXPanel = new JPanel(new GridLayout(0,1));
SelectXPanel.add(x);
JPanel SelectYPanel = new JPanel(new GridLayout(0,1));
SelectYPanel.add(y);
JPanel SelectZPanel = new JPanel(new GridLayout(0,1));
SelectZPanel.add(z);
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JPanel mainPane = new JPanel(new GridLayout(3,0));
mainPane.add(Box.createRigidArea(new Dimension(0,1)));
mainPane.add(buttonPane2);
mainPane.add(Box.createRigidArea(new Dimension(0,1)));
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bigFrame.add(mainPane, BorderLayout.WEST);
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add(bigFrame);
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public void actionPerformed (ActionEvent e){
if (e.getSource() == TimingButton ){
JPanel bigFrame = new JPanel(new GridLayout(0,2));
bigFrame.add(mainPane, BorderLayout.WEST);
bigFrame.add(SelectZPanel,BorderLayout.EAST);
add(bigFrame);
else if (e.getSource() == ViewButton ){
JPanel bigFrame = new JPanel(new GridLayout(0,2));
bigFrame.add(mainPane, BorderLayout.WEST);
bigFrame.add(SelectYPanel,BorderLayout.EAST);
add(bigFrame);
else if (e.getSource() == FrequencyButton ){
JPanel bigFrame2 = new JPanel(new GridLayout(0,2));
bigFrame.add(mainPane, BorderLayout.WEST);
bigFrame.add(SelectXPanel,BorderLayout.EAST);
add(bigFrame);
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// class fviewl2
import java.awt.*;
import java.awt.event.*;
import java.awt.Image;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import java.text.*;
import javax.swing.border.*;
class fviewl2 extends JPanel implements ActionListener
//Labels to identify the fields
private JLabel stationLabel;
private JLabel firstLabel;
private JLabel lastLabel;
//Strings for the labels
private static String station = "MRT Station:";
private static String first = "First Train Time:";
private static String last = "Last Train Time:";
//Fields for data entry
private JFormattedTextField stationField;
private JFormattedTextField firstField;
private JFormattedTextField lastField;
//button
private JButton homeButton;
private JButton cancelButton;
private JButton calculateButton;
public fviewl2()
super(new BorderLayout());
//create the object
//Create the Labels
stationLabel = new JLabel(station);
firstLabel = new JLabel (first);
lastLabel = new JLabel (last) ;
//Create the text fields .// MRT Station:
stationField = new JFormattedTextField();
stationField.setColumns(10);
stationField.setBounds(300,300,5,5);
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firstField = new JFormattedTextField();
firstField.setColumns(10);
firstField.setBounds(300,300,5,5);
//Create the text fields //Last Train Time:
lastField = new JFormattedTextField();
lastField.setColumns(10);
lastField.setBounds(300,300,5,5);
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stationLabel.setLabelFor(stationField);
firstLabel.setLabelFor(firstField);
lastLabel.setLabelFor(lastField);
//create button and set it
homeButton = new JButton("Home");
//homeButton.addActionListener(this);
cancelButton = new JButton("Cancel");
cancelButton.addActionListener(this);
calculateButton = new JButton("Get Time");
// Layout
//MRT Station Label // insert into the panel
JPanel StationPane = new JPanel(new GridLayout(0,1));
StationPane.add(stationLabel);
//MRT Station input field // insert into the panel
JPanel StationInput = new JPanel(new GridLayout(0,1));
StationInput.add(stationField);
//Get Time Button // insert into the panel
JPanel GetTime = new JPanel(new GridLayout(0,1));
GetTime.add(calculateButton);
//Lay out the labels in a panel.
JPanel FlabelL = new JPanel(new GridLayout(0,1));
FlabelL.add(firstLabel);
FlabelL.add(lastLabel);
// Layout the fields in a panel
JPanel FFieldL = new JPanel(new GridLayout(0,1));
FFieldL.add(firstField);
FFieldL.add(lastField);
//Lay out the button in a panel.
JPanel buttonPane = new JPanel(new GridLayout(1,0));
buttonPane.add(homeButton);
buttonPane.add(cancelButton);
// Layout all components in the main panel
JPanel mainPane = new JPanel(new GridLayout(4,2));
mainPane.add(StationPane);
mainPane.add(StationInput);
mainPane.add(Box.createRigidArea(new Dimension(0,1)));
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mainPane.add(FlabelL);
mainPane.add(FFieldL);
mainPane.add(Box.createRigidArea(new Dimension(0,1)));
mainPane.add(buttonPane);
mainPane.setBorder(new TitledBorder("View First and Last Train"));
JPanel leftPane = new JPanel(new GridLayout(1,0));
leftPane.add(Box.createRigidArea(new Dimension(0,1)));
leftPane.add(mainPane);
leftPane.add(Box.createRigidArea(new Dimension(0,1)));
JPanel hahaFrame = new JPanel(new GridLayout(0,1));
hahaFrame.add(Box.createRigidArea(new Dimension(0,1)));
hahaFrame.setBorder(BorderFactory.createEmptyBorder(30, 10, 80, 150));
hahaFrame.add(Box.createRigidArea(new Dimension(0,1)));
JPanel bigFrame = new JPanel();
bigFrame.add(hahaFrame, BorderLayout.NORTH);
bigFrame.add(leftPane, BorderLayout.CENTER);
add(bigFrame, BorderLayout.CENTER);
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private void cancelButtonClicked()
stationField.setText("");
firstField.setText("");
lastField.setText("");
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if (e.getSource() == cancelButton){
cancelButtonClicked();
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