1. class A implements Runnable ( 2. int i; 3. public void run ( ) ( 4. try ( 5. thread.sleep(5000); 6. i= 10; 7. ) catch(InterruptedException e) {} 8. ) 9. ) 10. 11. public class Test { 12. public static void main (string args[]) ( 13. try ( 14. A a = new A ( ); 15. Thread t = new Thread (a); 16. t.start( ); 17. 18. int j= a.i; 19. 20. ) catch (Exception e) {} 21. ) 22. } Which statement al line 17 will ensure that j=10 at line 19?()
- A、 a.wait();
- B、 t.wait();
- C、 t.join();
- D、 t.yield();
- E、 t.notify();
- F、 a.notify();
- G、 t.interrupt();
正确答案:C
答案解析:有
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