Java(TM) Boutique - Tutorials - Unfreeze Your Applications with the New SwingWorker

Listing 2. Adding a property listener to a SwingWorker.

swingWorker.addPropertyChangeListener(new PropertyChangeListener(){
  public void propertyChange(PropertyChangeEvent evt){
    if ("state".equals(evt.getPropertyName())){
      switch (swingWorker.getState()){
      case STARTED:
        statusLabel.setText("Started");
        break;
      case DONE:
        if (swingWorker.isDone()){
          try {
            if (!swingWorker.isCancelled()){
              statusLabel.setText("Done");
            } else {
              statusLabel.setText("Cancelled");
            }
          } catch (InterruptedException e){
            // swingWorker was interrupted
            statusLabel.setText"Interrupted");
            e.printStackTrace();
          } catch (ExecutionException e){
            // swingWorker threw an exception
            statusLabel.setText("Failed");
            e.getCause().printStackTrace();
          }
        }
      }
    }
  }
});

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