Option<T>

gistfile1.java

class Option<T> {
  private T val;
  private bool hasVal;
  
  public Option<T>() {
    hasVal = false;
  }
  public Option<T>(T val) {
    this.val = val;
    hasVal = true;
  }
  
  public bool isSome() {
    return hasVal;
  }
  
  public bool get() {
    if (!hasVal) {
      throw new EntityNotFoundException();
    }
    return val;
  }
}


class MyObject {
  public static Option<MyObject> findBy(int id) {
    if (!found) {
      return new Option();
    }
    return new Option(foundObject);
  }
}
}