Question: There are two classes: A and B. The class B need to inform a class A when some important event has happened. What Java technique would you use to implement it?Answer: If these classes are threads I'd consider notify() or notifyAll(). For regular classes you can use the Observer interface. |
احفظ للمراجعة
احفظ هذا العنصر في الإشارات المرجعية، او حدده كصعب، او ضعه في مجموعة مراجعة.
سجل الدخول لحفظ الإشارات المرجعية والاسئلة الصعبة ومجموعات المراجعة.
هل هذا مفيد؟ نعم لا
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