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作者 | 请大家帮忙。(想了很久也想不出来的几道题。) |
jin3shan
发贴: 33 积分: 0 |
于 2006-08-22 12:27
17 of 20、 Given: Integer i = new Integer (42); Long 1 = new Long (42); Double d = new Double (42.0); Which two expressions evaluate to True? (Choose Two) A. (i ==1) B. (i == d) C. (d == 1) D. (i.equals (d)) E. (d.equals (i)) F. (i.equals (42)) 正确答案: D,E 注解: **************************** 3 of 20、 1. public class SyncTest{ 2. public static void main(String[] args) { 3. final StringBuffer s1= new StringBuffer(); 4. final StringBuffer s2= new StringBuffer(); 5. new Thread () { 6. public void run() { 7. synchronized(s1) { 8. s2.append(“A”); 9. synchronized(s2) { 10. s2.append(“B”); 11. System.out.print(s1); 12. System.out.print(s2); 13. } 14. } 15. } 16. }.start(); 17. new Thread() { 18. public void run() { 19. synchronized(s2) { // synchronized 20. s2.append(“C”); 21. synchronized(s1) { 22. s1.append(“D”); 23. System.out.print(s2); 24. System.out.print(s1); 25. } 26. } 27. } 28. }.start(); 29. } 30. } Which two statements are true? (Choose Two) A. The program prints “ABBCAD” B. The program prints “CDDACB” C. The program prints “ADCBADBC” D. The output is a non-deterministic point because of a possible deadlock condition. E. The output is dependent on the threading model of the system the program is running on. 正确答案: D,B 注解: ************************** 19 of 20、 Which two are equivalent? (Choose Two) A. 3/2 B. 3<2 C. 3*4 D. 3<<2 E. 3*2^2 F. 3<<<2 正确答案: C,D 注解:
why edited on 2006-08-22 16:57
Windows环境下的tomcat + apache配置(绝对实践操作版) |
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人气 | 标题 | 作者 | 字数 | 发贴时间 |
7283 | 请大家帮忙。(想了很久也想不出来的几道题。) | jin3shan | 1606 | 2006-08-22 12:27 |
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