SetCursor use for multiple top level windows (JFrame)

Question

Hello,
I have an application with many top level windows, most of which are running under a single
thread. I'm trying to implement a class to toggle the cursor (normal<->busy) for any window
that is present in the application.
I can't seem to get the cursor to change for any window other than the main window. I'm providing
below the class that's used to register the windows and set the cursors.
What am I missing?
import java.awt.Cursor;
import java.util.ArrayList;
import javax.swing.JComponent;
import javax.swing.RootPaneContainer;
public class AppWindows {
    ArrayList<WinInfo> windows;
    /** Creates a new instance of AppWindows */
    public AppWindows() {
        windows = new ArrayList<WinInfo>();
    public void add(JComponent window, String title) {
        WinInfo win = new WinInfo(window, title);
        windows.add(win);
    public void delete(JComponent window) {
        windows.remove(window);
    public void deleteAll() {
        windows.clear();
    public void setBusyStatus(boolean busy) {
        for(int i=0; i<windows.size(); i++) {
            JComponent j = windows.get(i).getWindow();
            RootPaneContainer root = (RootPaneContainer)j.getTopLevelAncestor();
            if(busy == true) {
                root.getGlassPane().setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
                root.getGlassPane().setVisible(true);
            else {
                root.getGlassPane().setCursor(Cursor.getDefaultCursor());
                root.getGlassPane().setVisible(false);
class WinInfo {
    private JComponent win;
    private String title;
    public WinInfo(JComponent win, String title) {
        this.win = win;
        this.title = title;
    public JComponent getWindow() {
        return win;
}Bill

Answer 1

I would very much like to know how to avoid this also!!!