Hi,

I have a class that extends a jframe with some additional private
fields. It also has an inner class that extends SwingWorker and some
inner classes that are action listeners.

I was wondering if it is safe to write to a (private) field from the
SwingWorker finished method, while the listeners read the private field.

example:

public class MyDialog extends JDialog {

public MyDialog(Dialog owner) {
    super(owner);
    closeButton.addActionListener(new CloseListener());
    workButton.addActionListener(new WorkListener());
}

private MyWorker worker;

    class CloseListener implements ActionListener {

        public void actionPerformed(ActionEvent e)
        {
            if (worker != null)
                return;
            hide();
        }

    }

    class WorkListener implements ActionListener {

        public void actionPerformed(ActionEvent e)
        {
            if (worker != null)
                return;

            worker = new MyWorker(tree);
            worker.start();
        }

    }

    class MyWorker extends SwingWorker
    {

        public Object construct()
        {
            // working hard
            return null;
        }

        public void finished()
        {
            worker = null;
        }

}

I would also appreciate any resources, such as URL's, about using the
SwingWorker in combination with progress and interrupt.
Thanks for any help!