Bindings throwing exception

Bindings throwing exception

Busy with a school project, and NetBeans is frustrating me to death.
Please help me resolve the below error and please show me what I have done
wrong.
I'm busy with bindings and Apache Derby. What I'm doing is I'm binding
data from the database to text fields. I have a JFrame Form with two
tabbed panels. One has a table on it 1, and another one shows individual
records 2.


This is an extract of the coding for the binding on the single record view:
1 package UserManager;
import java.util.*;
5 /**
*
* @author Johan Brink
*/
public class Data extends javax.swing.JFrame {
10 Users users = new Users();
ListIterator<Users>iterator;
public Users getUsers() {
return users;
15 }
public void setUsers(Users users) {
Users oldUsers = this.users;
this.users = users;
20 firePropertyChange("users", oldUsers, users);
}
/**
* Creates new form Data
25 */
public Data() {
initComponents();
setLocationRelativeTo(rootPane);
iterator = usersList.listIterator(0);
30 setUsers(iterator.next());
}
The problem lies on lines 29 and 30. This have worked in the past, but now
I get an error. I have an automatically-created entity class, etc. Without
lines 29 and 30, everything works except the individual records
information isn't listed. When lines 29 and 30 is inserted, the following
error is displayed when run:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException:
Cannot cast java.util.Date to java.lang.String
at java.lang.Class.cast(Class.java:3084)
at org.jdesktop.beansbinding.Binding.convertForward(Binding.java:1312)
at
org.jdesktop.beansbinding.Binding.getSourceValueForTarget(Binding.java:844)
at org.jdesktop.beansbinding.Binding.refreshUnmanaged(Binding.java:1222)
at org.jdesktop.beansbinding.Binding.refresh(Binding.java:1207)
at
org.jdesktop.beansbinding.AutoBinding.tryRefreshThenSave(AutoBinding.java:162)
at
org.jdesktop.beansbinding.AutoBinding.sourceChangedImpl(AutoBinding.java:227)
at org.jdesktop.beansbinding.Binding.sourceChanged(Binding.java:1411)
at org.jdesktop.beansbinding.Binding.access$1200(Binding.java:38)
at
org.jdesktop.beansbinding.Binding$PSL.propertyStateChanged(Binding.java:1618)
at
org.jdesktop.beansbinding.PropertyHelper.firePropertyStateChange(PropertyHelper.java:212)
at
org.jdesktop.beansbinding.ELProperty.notifyListeners(ELProperty.java:688)
at org.jdesktop.beansbinding.ELProperty.access$800(ELProperty.java:155)
at
org.jdesktop.beansbinding.ELProperty$SourceEntry.processSourceChanged(ELProperty.java:312)
at
org.jdesktop.beansbinding.ELProperty$SourceEntry.sourceChanged(ELProperty.java:326)
at
org.jdesktop.beansbinding.ELProperty$SourceEntry.propertyChange(ELProperty.java:333)
at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
at
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
at
java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
at java.awt.Component.firePropertyChange(Component.java:8382)
at UserManager.Data.setUsers(Data.java:24)
at UserManager.Data.<init>(Data.java:34)
at UserManager.Data$7.run(Data.java:419)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)