// construct and initialize a ChoiceBox for an EnumeratedType
EnumeratedChoice mySizeChoice = new EnumeratedChoice();
mySizeChoice.setEnumeratedTypeClassName( "wt.example.MySize" );
// set current choice selection to the current value
mySizeChoice.setSelectedEnumeratedType( myItem.getSize() );
... user makes selection
// obtain the chosen selection
MySize selection =
(MySize)mySizeChoice.getSelectedEnumeratedType();