How to update JFrame Label within a Thread? - Java

Question

I have tried a lot, but can\'t seem to get it to work.

I was told to use EDT with the following example.

    SwingUtilities.invokeLater(new Runnable(         


        

Answer 1

If you're all looking to do is update the UI on a known schedule, try something like the following. This assumes that a JFrame is the component you wish to update every 1 second.

private static final int WAIT_LENGTH = 1000; // 1 second
private JFrame frame = new JFrame();

// Thread will update the UI (via updateUI() call) about every 1 second
class UIUpdater extends Thread {
  @Override
  void run() {
    while (true) {
      try {
        // Update variables here
      }
      catch (Exception e) {
        System.out.println("Error: " + e);
      }
      finally {
        frame.repaint();
        Thread.sleep(WAIT_LENGTH);
      }
    }
  }
}

To start this thread:

UIUpdater t = new UIUpdater();
t.start();