question: public void morph ( Component source , Component destination , int duration , Runnable onCompletion ) { morph ( source , destination , duration , false , onCompletion ) ; }
target:  Morph is similar to the replace functionality where a component might be replaced with  a component that isn't within the container. However, unlike the replace functionality which uses a transition and assumes the position of the component (and is hence quite flexible) morph can move and resize the component. E.g. after entering text into a text field and pressing submit it can "morph" into a chat bubble located in a different part of the screen.<br> It is the responsibility of the caller to remove the source component (if desired) and revalidate the  container when the animation completes.