EventBus1.java

public class ProductListActivity extends Activity implements FragmentListener{
  
  @Override public void onRefreshData() {
    apiService.getProducts(new Callback() {
      
      @Override void onSuccess(List<Product> list){
        EventBus.getDefault().post(new ProductListSuccessEvent(list));
      }
      
      @Override void onFail(Error error){
        EventBus.getDefault().post(new ProductListFailEvent(error));
      }
    }
  }
}