JOptionPane not repainting

[Tim Clark]

Hi there!
I am writing a GUI which has a JOptionPane (called from a JButton's action performed method) which doesnt repaint the background when i click ok.
Here is a code snippet inside the JButtonActionPerformed method:

Runnable printWR = new Runnable() {
  public void run() {
    printWeeklyReport(startDate, endDate);
  }
};
SwingUtilities.invokeLater(printWR);

After clicking OK on the OptionPane it closes and runs my method printWeeklyReport but the stuff behind the optionPane just remains greyed out until the printWeeklyReport method finishes.
I am new to threads...so I could be completely on the wrong track here.
Any help would be greatly appreciated!

[Jeremy Maddera]

first you are running your print weekly report on the Event Thread. The Event Thread is the thread that paints the UI. The UI will not repaint until the print weekly report is completed.....You need to run the print weekly report in a different thread. after it is completed then update the UI with a thread the runs in the Event Thread to update any UI Objects...
Look at the SwingWorker class on the Sun site
http://java.sun.com/products/jfc/tsc/articles/threads/threads2.html