如何只订阅BehaviorSubject的未来更新？

Question

我只想订阅一个BehaviorSubject的未来更新，我用这种方法做了，但我认为这不是一个好的。

BehaviorSubject<Account> behaviorSubject = BehaviorSubject.create();

PublishSubject<Account> publishSubject = PublishSubject.create();

behaviorSubject.subscribe(publishSubject);

behaviorSubject.onNext(new Account()); 

behaviorSubject.subscribe(result -> Log.e("print1", result.toString()));

publishSubject.subscribe(result -> Log.e("print2", result.toString()));

behaviorSubject.onNext(new Account());

问候。