An example service

service_example1.java

public class ExampleClientService implements ExampleListener {

  private final List<ExampleListener> listeners = new ArrayList<ExampleListener>();
  private final List<Example> examples = new ArrayList<Example>();

  public void addExampleListener(ExampleListener listener) {
    listeners.add(listener);
  }

  public void removeExampleListener(ExampleListener listener) {
    listeners.remove(listener);
  }

  /** {@inheritDoc} */
  @Override
  public void goodExampleDispatched(Example example) {
    copyExample(example);
  }

  /** {@inheritDoc} */
  @Override
  public void badExampleDispatched(Example example) {
    copyExample(Example);
  }

  private void copyExample(Example example) {
    // Copy Example into list and then send list to all listeners.
  }

}