Java Swing - running on EDT

Question

I have a couple of questions with regards to Swing and using EDT for GUI updates. I just started reading on this stuff so I am a full beginner in this area:

1. Wh

Answer 1

SwingWorker ensure that done() method is run on EDT via below code:

    Runnable doDone =
        new Runnable() {
            public void run() {
                done();
            }
        };
    if (SwingUtilities.isEventDispatchThread()) {
        doDone.run();
    } else {
        doSubmit.add(doDone);
    }

Actually it add the doDone variable into AccumulativeRunnable doSubmit,

See the source code of AccumulativeRunnable.java you will find there has a below code

protected void submit() {

SwingUtilities.invokeLater(this);

}

That's why swingworker ensure the method done() running on EDT