Here you can find the source of runInEventDispatchThread(Runnable r)
public static void runInEventDispatchThread(Runnable r)
//package com.java2s; /*//from www . j a v a 2 s .c om * Sun Public License Notice * * The contents of this file are subject to the Sun Public License * Version 1.0 (the "License"). You may not use this file except in * compliance with the License. A copy of the License is available at * http://www.sun.com/ * * The Original Code is NetBeans. The Initial Developer of the Original * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun * Microsystems, Inc. All Rights Reserved. */ import javax.swing.SwingUtilities; public class Main { public static void runInEventDispatchThread(Runnable r) { if (SwingUtilities.isEventDispatchThread()) { r.run(); } else { SwingUtilities.invokeLater(r); } } }