title: Submitting a background job and updating stage with result
body: <p>I'm a complete noob with JavaFX 2 - (started this morning with a HelloWorld that I'm adapting). </p>
  
  <p>I need to update a Text node with the result of a background thread. Is there anything special I need to be aware of with JavaFX2 or is it simply enough to submit a callable and update the text. A pointer to a tutorial would be appreciated.</p>