Funny behaviour of JSpinner

Question

please help me solving this peculiar problem with jspinner . I got a jspinner , a text box and a button of my frame.i have written code to valdiate the value entered in text field. If an invalid value is entered an error dialog is show. and focus is returned to the textbox.. Now if I enter an invalid value in the text field and click the small buttons in jspinner, the error dialog is displayed and focus is returned back to the textbox but the problem is that the spinner button remains in a pressed condition as a result the number keeps of increasing / decreasing in jspinner (if you click both the buttons , it will increase and decrease at the same time). I am including the code also.
I have searched through the forums and find that its a problemm with the look and feel. Can any one suggest a simple method to rectify it ??
thanks in advance
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class focus extends JFrame implements FocusListener {
JPanel pan1=new JPanel();
JButton btn1=new JButton("OK");
JButton btn2=new JButton("Cancel");
JTextField txt1=new JTextField(10);
SpinnerCircularNumberModel model=new SpinnerCircularNumberModel(50);
JSpinner spin=new JSpinner(model);
focus() {
getContentPane().setLayout(new FlowLayout());
getContentPane().add(txt1);
getContentPane().add(btn1);
getContentPane().add(btn2);
getContentPane().add(spin);
txt1.addFocusListener(this);
setSize(200,200);
setVisible(true);
pack();
public void focusGained(FocusEvent fe) {
public void focusLost(FocusEvent fe) {
     try {
          Integer.parseInt(txt1.getText());
     } catch ( NumberFormatException nfe) {
          JOptionPane.showMessageDialog(this, "Invalid value","ERROR", JOptionPane.ERROR_MESSAGE);               
txt1.requestFocus();
public static void main(String arg[]) {
focus f=new focus();
class SpinnerCircularNumberModel extends SpinnerNumberModel {
public SpinnerCircularNumberModel(int init) {
super(init,0,99,1);
public Object getNextValue() {
int val = Integer.parseInt(getValue().toString());
if(val==99)
return (new Integer(0));
else
return (new Integer(++val));
public Object getPreviousValue() {
int val = Integer.parseInt(getValue().toString());
if(val==0)
return (new Integer(99));
else
return (new Integer(--val));

Answer 1

I used it in the following way:
class OptEmSpinner extends EmSpinner{
public OptEmSpinner() {
public interface RevertListener extends EventListener
     * The value has been Reverted to a the old valid value.
     * @param source is this bean.
     public void valueReverted(Component source);
public static class OptNumberEditor extends NumberEditor {
     public OptNumberEditor(JSpinner spinner) {
     super(spinner);
     public void propertyChange(PropertyChangeEvent e)
          OptEmSpinner spinner = (OptEmSpinner)getSpinner();
          if (spinner == null) return; // Indicates we aren't installed anywhere.
          Object source = e.getSource();
          String name = e.getPropertyName();
          if ((source instanceof JFormattedTextField) && "value".equals(name))
               Object lastValue = spinner.getValue();
               // Try to set the new value
               try
                    spinner.setValue(getTextField().getValue());
               catch (IllegalArgumentException iae)
                    // Spinner didn't like new value, reset
                    try
                         ((JFormattedTextField)source).setValue(lastValue);
                    catch (IllegalArgumentException iae2)
                         spinner.fireValueReverted(e);
                         // Still bogus, nothing else we can do, the
                         // SpinnerModel and JFormattedTextField are now out
                         // of sync.
          else
               spinner.fireValueReverted(e);
protected JComponent createEditor(SpinnerModel model) {
     if (model instanceof SpinnerNumberModel) return new OptNumberEditor((JSpinner)this);
     return super.createEditor(model);
private void fireValueReverted(PropertyChangeEvent e)
     Object source = e.getSource();
     String name = e.getPropertyName();
// JFormattedTextField jft = ((DefaultEditor) getEditor()).getTextField();
     JComponent jft = ((DefaultEditor)getEditor()).getTextField();
     if ((source instanceof JFormattedTextField) && "editValid".equals(name))
          if (!jft.hasFocus()) // ensure lost focus
               Object[] listeners = listenerList.getListenerList();
               for (int i = listeners.length - 2; i >= 0; i -= 2)
                    if (listeners[i] == RevertListener.class)
                         ((RevertListener)listeners[i + 1]).valueReverted(jft);
public void addRevertListener(RevertListener revListener)
     listenerList.add(OptEmSpinner.RevertListener.class, revListener);
public void removeRevertListener(RevertListener revListener)
     listenerList.remove(OptEmSpinner.RevertListener.class, revListener);
USED in class:
public class MyPanel extends JPanel implements OptEmSpinner.RevertListener
LISTENER IMPLEMENTATION:
public void valueReverted(Component source)
          Runnable runnable =
                    new Runnable()
                         public void run()
                              EmOptionPane.showSemiModalMessageDialog(
                                   parent,
                                   sRes.getString("Invalid Value: Old value will be retained."),
                                   sRes.getString("Invalid Input"),
                                   JOptionPane.WARNING_MESSAGE
//                              dialogShown = false;
               SwingUtilities.invokeLater(runnable);
You can modify or pick from this......
Regards
Mohit