// Our way
  abstract public class AbstractTask {
    void runMe(){
      try {
        run();
        onSuccess();
      } catch(Exception e){
        //log exception
      }
    }
    abstract public void run();

    abstract public void onSuccess();
  }


  // I prefer this one
  public interface ITask {
    void run();
    void onSuccess();
    void onError();
  }

  public class TaskRunner{
    void runTask(ITask task){
      try {
        task.run();
        task.onSuccess();
      } catch(Exception e){
        task.onError();
      }
    }
  }
}