Swingworker terminating itself

[Bod McLeon]

I have a gui that I initialise using swingworker like this:

public static void startGUIThread() {
		SwingWorker gui = new SwingWorker()  
        { 
            @Override
            protected String doInBackground() 
            { 
            	LoggerMain.initialize();
            	LoggerMain.Log(String.format("OS: %s, OSver: %s, OSarch: %s, JAVAver: %s", 
        				System.getProperty("os.name"),
        				System.getProperty("os.version"),
        				System.getProperty("os.arch"),
        				System.getProperty("java.version")), Level.CONFIG);
            	
            	MainGUI main = new MainGUI();
            	main.frame.setVisible(true);
            	
				return "";      		
            } 
 
            @Override
            protected void done()  
            { 
                LoggerMain.Log("GUI thread executed successfully!", Level.INFO);
            }
        }; 
 
        gui.execute(); 
	}

However, I have to run the program like 5 times before the gui shows.
I am running it in Eclipse and if I look at the text just above the console output I see:
MainGUI [Java Application]  - this is when I first run it.
About two seconds later I see:
<terminated> [Java Application]
But no GUI appears.

Why is it terminating the thread before the gui opens?

[S Fox]

you aren't allowed to draw the GUI on a background thread, read the tutorial pages here
swing concurrency

[Bod McLeon]

S Fox wrote:you aren't allowed to draw the GUI on a background thread, read the tutorial pages here
swing concurrency

Good to know, thank you!