Which two statements are true for any concrete class implementing the java.lang.Runnable interface?

Which two statements are true for any concrete class implementing the

1.	Which two statements are true for any concrete class implementing the java.lang.Runnable interface?
Answer» (2) and (6). When a thread's run() method completes, the thread will die. The run() method must be declared public void and not take any arguments. (1) is incorrect because classes can never extend interfaces. (3) is incorrect because the run() method is typically not empty; if it were, the thread would do nothing. (4) is incorrect because the mandatory method is run(). (5) is incorrect because the class implements Runnable.