Java SE (Java Platform, Standard Edition)

I have multiple Thread.sleep()'s in my code under a jButton actionevent evt.

In between these, I need to be able to update a jLabel, but for some reason it waits until the last thread.sleep() before it updates the jLabel.

Any ideas why?

private void jButtonActionPerformed(java.awt.event.ActionEvent evt) {
   try {

      Thread.sleep(1000);

      jLabel.setText("Change Text To This");

      Thread.sleep(1000);

   } catch (InterruptedException ex) {}
}

So rather than waiting 1000ms, then update label, then wait another 1000ms, it just waits 2000ms, then updates the label

Please help!

Thanks