invokelater

Ok I've read an searched all over the web, and I've not found the solution to my problem yet, perhaps I'm missing something simple, hence here I am... I've got a rather large project, that handles work orders for a repair business. It's all database connected, many many pages of code, and classes. But i just added a short bit of code to the front end that essentially checks for new messages in our notes area. Anyway, I display a simple JFrame with two JLabel s while a separate thread queries the database. This all happens at the start of the program. The problem is my little "please wait"

I recently found an example code: public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } The createAndShowGUI() method opens a user interface window. Then I tried to trim the code as the following: public static void main(String[] args) { createAndShowGUI(); } Both versions work equally well. What is the difference? 99% of the time either code will work. However, Swing was designed such that all updates to Swing components should be done on the Event Dispatch Thread (EDT). Read the Swing tutorial on

After years of Java programming I always used to create my main() methods like this : public static void main(String[] args) { runProgram(); } But recently I studied some codes from the Web and saw this sometimes instead of the usual main() use above : public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { runProgram(); } }); } I simply want to know : Why to use this instead of the usual main() way ? I can't see any difference when I give it a try. What is the difference between these two ways ? Thanks for reading me and your answers. The docs