JTable doesn't refresh :(

[Tomer Gal]

Hi Guys,
I'm doing a project for the university and I've got a problem with a JTable.
When I add some items it doesn't get updated, if someone could help I'd appreciate it.

Here is my code :

import javax.swing.*;
import java.util.Iterator;
import javax.swing.table.*;
import javax.swing.tree.DefaultTreeModel;
 
import java.awt.event.*;
 
public class GUIUsersTab extends AbstractTableModel {
JPanel pnUsersDatabaseTab;
JTable tbUsersTable ;
LocalServer theLocalServer;
JButton addButton = new JButton("Add");
JButton removeButton = new JButton("Remove");
static TableModel model;
JTable table ;
String []colsUsersTable = new String[] {"User", "Password", 
"First Name","Last name", "Email", "Privilege" , "Status" };

 
public int getRowCount() {
return ( theLocalServer.getTheUsersDatabase().lastIndexOf(theLocalServer.getTheUsersDatabase().getLast()) + 1 );
}

public int getColumnCount() {
return 7;
}
public String getColumnName(int column) {
return colsUsersTable[column];
}
public Object getValueAt(int row, int column) {
Iterator i = theLocalServer.getTheUsersDatabase().iterator() ;
int j=0;
while (i.hasNext()) {
if ( j != row) {
j++;
i.next();
}
else {
switch (column) {
case 0 : return ((User)i.next()).getLogin();
case 1 : return ((User)i.next()).getPassword();
case 2 : return ((User)i.next()).getFirstName();
case 3 : return ((User)i.next()).getLastName();
case 4 : return ((User)i.next()).getEmail();
case 5 : return ((User)i.next()).getUserRank();
case 6 : return ((User)i.next()).getStatus();
}
}
}
return "ERROR IN JTABLE, CHECK GUIUsersDatabaseTAB following method : public Object getValueAt(int row, int column)";
}

public void reloadTheGUI() {
//DefaultTableModel model = (DefaultTableModel) table.getModel();
System.out.println("Attempting Table refresh?");
theLocalServer.getTheGUIServerMainPanel().theGUIUsersDatabaseTab.table.validate();
}
public GUIUsersTab(LocalServer theLocalServer) {
this.theLocalServer = theLocalServer;
model = this;
table = new JTable(model);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
}

}

As you can understand... my attempt at the method reloadTheGUI() doesn't work. I'm planning on implementing there the code to refresh the JTable.

[Tomer Gal]

Anybody ?

[Ernest Friedman-Hill]

Hi,

First, a bit of business: you may not have read our naming policy on your way in. It requires that you use a full, real (sounding) first and last name for your display name. An initial isn't enough for a last name. You can change your display name here. Thanks!

Now, as to your problem: the TableModel needs to let the rest of the world know the data has changed. The way to do that is via a TableModelEvent, and the easiest thing you could do would be to call fireTableDataChanged() on your TableModel. This will cause the JTable to refetch all of its contents from the model.