单项选择题
A.synchronized() notify() B.synchronized() this.wait() C.synchronized() this.notify() D.synchronized() sleep()
A.implements Runnable B.extends Thread C.implements Thread D.extends Runnable
A.SomeThread类是包含run()方法的任意java类 B.SomeThread类一定要实现Runnable接口 C.SomeThread类是Thread类的子类 D.SomeThread类是Thread类的子类并且要实现Runnable接口