使用SwingUtilities.invokeLater（）在线程中插入GUI的优点是什么？

Question

Hi all I have seen Swing GUI's being launch like this

public class Main {

public static void main(String args[]){
    SwingUtilities.invokeLater(new Runnable() {
        @Override
        public void run() {
            // TODO Auto-generated method stub
            new Gui();
        }

    });

}

}

What are the benefits of launching it this way?

Answer 1

More than benefits, I would say that it is necessary because most Swing components are not thread safe. invokeLater will run the task inside Swing event dispatch thread, avoiding thread interference or memory consistency errors.

You can find it mentioned in the Swing Tutorial, Event Dispatch Thread chapter .

Answer 2

Swing is single threaded. You need to queue GUI changes onto the swing event dispatch thread. It isn't really an advantage, it is a requirement. Otherwise, the behavior is undefined.

http://docs.oracle.com/javase/tutorial/uiswing/concurrency/dispatch.html