Create an EventDispatcherFactory

Your class needs a mechanism for dispatching events to listeners.

Create an instance of EventDispatcherFactory parameterized with your Event interface:

Figure 1. Creating an EventDispatcherFactory

          package curam.mypackage;

import com.google.inject.Inject;

import curam.util.persistence.helper.EventDispatcherFactory;

public class MyEventSource {

  public abstract class Event {
    public void preDoSomething(MyEventSource raiser) {
      // intentionally empty
    }

    public void postDoSomething(MyEventSource raiser) {
      // intentionally empty
    }
  }
           @Inject
  private EventDispatcherFactory<Event> dispatcher; 
          public void doSomething() {

    // do whatever it is that needs to be done
    System.out.println("Do something!");

  }

}