title: Combo-box key value pair in JavaFX 2
body: <p>I am just starting to learn JavaFX 2.<br>
  Now I am trying to build a sample application. Then I got stuck in combobox.<br>
  I did not find any reference to key value pair for combobox in JavaFX.<br>
  The combobox javadoc at <a href="http://docs.oracle.com/javafx/2/api/index.html">http://docs.oracle.com/javafx/2/api/index.html</a> does not say much about key value pair.</p>
  
  <p>How can I create a combobox that has items which have different display value and actual value ?</p>