Troubles with Repaint/Revalidate and all...

Question

Alrighty, I've wasted far too much time trying to track this down myself when I am sure someone can answer it in a couple lines. The root of the problem lies in this whole blasted revalidate and repaint thing.
I have read numerous threads in here, and they all seem to talk about the opposite problem I am having. I am really very frusterated with this ATM, so I'm hoping someone can help out.
Here is the basic feel of my project:
JFrame
JTabbedPane
Tab1
JPanel left
JPanel right
The left panel contains a scrolling pane, inside of which is a panel (BoxLayout along YAxis) that gets labels added to dynamically. Data from a database is used to create the labels.
On the right panel I have textboxes for dataentry and a button. When the button is pressed, the data from the boxes is placed in the database, and a method is called to refresh the left scrollpane. Here is that code:
private void populateVendors() {
    vendorlist = IMS.vdv.retrieveVendors();  //This is of type String[][]
    JPanel panel[] = new JPanel[vendorlist.length];
    for(int i=0; i<vendorlist.length; ++i) {
      panel[i] = new JPanel(new BorderLayout());
      panel.add(new JLabel(vendorlist[i][1]),BorderLayout.CENTER);
panel[i].setBounds(new Rectangle(0,20*i,250,20));
panel[i].setName(vendorlist[i][0]);
panel[i].addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e){
VendorPanelClicked(e);
public void mouseEntered(MouseEvent e){
VendorPanelEntered(e);
public void mouseExited(MouseEvent e){
VendorPanelExited(e);
pnlVendorList.add(panel[i],null);
This code refreshes the scrollpane (pnlVendorList is the panel inside of the scrollpane) just as I want it to. But only until I move my mouse over the panel that just changed (invokes the mouse entered event), or until I switch tabs and come back. Basically the next time this panel gets repainted, it reverts back to the old data.
I am sure this is clear as mud, so if you need clarification ask. Otherwise I would realy like some help with this!
Thanks in advance.

Answer 1

Do you remove the old components from pnlVendorList?
private void populateVendors() {
  pnlVendorList.removeAll();
  pnlVendorList.setLayout(new GridLayout(0, 1));
  vendorlist = IMS.vdv.retrieveVendors();
  for(int i=0; i < vendorlist.length; i++) {
    JPanel panel = new JPanel(new BorderLayout());
    panel.add(new JLabel(vendorlist[1]),BorderLayout.CENTER);
panel.setName(vendorlist[i][0]);
panel.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
VendorPanelClicked(e);
public void mouseEntered(MouseEvent e) {
VendorPanelEntered(e);
public void mouseExited(MouseEvent e) {
VendorPanelExited(e);
pnlVendorList.add(panel,null);