I refer to the documentation of the get() method in SwingWorker found
at https://swingworker.dev.java.net/javadoc/org/jdesktop/swingworker/
SwingWorker.html#get()

It includes the following example code as a suggestion when you want
to block and wait for the SwingWorker to finish. I've put some numbers
in for easier explanation.

class SwingWorkerCompletionWaiter extends PropertyChangeListener {
    private JDialog dialog;

    public SwingWorkerCompletionWaiter(JDialog dialog) {
        this.dialog = dialog;
    }

4     public void propertyChange(PropertyChangeEvent event) {
5         if ("state".equals(event.getPropertyName())
6                 && SwingWorker.StateValue.DONE ==
event.getNewValue()) {
7             dialog.setVisible(false);
8             dialog.dispose();
        }
    }
}
1    JDialog dialog = new JDialog(owner, true);
2    swingWorker.addPropertyChangeListener(
         new SwingWorkerCompletionWaiter(dialog));
3    swingWorker.execute();
     //the dialog will be visible until the SwingWorker is done
9    dialog.setVisible(true);

Is the execution path according to the numbers I've inserted above
possible? I would have thought that swingWorker.execute() could
potentially run the worker thread so quickly that it executes 8 before
9.

Would it not then block at 9?

Clarification would be great. I suspect there is something I'm missing
about what happens in SwingWorker.

Lionel.