Programming Interface (2)

Describe a simple mobile agent using Aglets(IBM).
public class MobileAgent extends Aglet {
  SimpleItinerary itinerary = null;

  public void onCreation(Object init) {
    itinerary = new SimpleItinerary(this);
    itinerary.go("atp://destination",
                                       "callback");  }

  public void callback(Message msg) {
    System.out.println("arrived.");  }
}
Very different from usual programming.
Migration system that cannot move execution context needs this type of programming.

In contrast with this, using MOBA
.....
MobaThread.goTo(destination);
.....