为什么 Object 类有方法 wait() 和 notify() 而 Class 类没有？

Question

Someone asked me this question in an interview. I am not sure if it is a valid question or not. If it is please reply. Thanks

Answer 1

java.lang.Class implictly extends java.lang.Object , like every other object type, so it inherits both this methods from Object :

Class<?> clazz = new Object().getClass();
clazz.wait();