How do I profile the EDT in Swing?

Question

I have an application that I\'m building in Swing. It has a scrollable and zoomable chart component which I can pan and zoom in. The whole thing is smooth except that sometime

Answer 1

Take a look at this question. It describes a simple log on the EDT.

Create a class like this:

public class TimedEventQueue extends EventQueue {
    @Override
    protected void dispatchEvent(AWTEvent event) {
        long startNano = System.nanoTime();
        super.dispatchEvent(event);
        long endNano = System.nanoTime();

        if (endNano - startNano > 50000000)
            System.out.println(((endNano - startNano) / 1000000)+"ms: "+event);
    }
}

Then replace the default EventQueue with the custom class:

Toolkit.getDefaultToolkit().getSystemEventQueue().push(new TimedEventQueue());