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单选题
11. public static void test(String str) {  12. if(str == null | str.lellgth() == 0) {  13. System.out.println(”String is empty”);  14. } else {  15. System.out.println(”String is not empty”);  16. }  17. }  And the invocation:  31. test(llull);  What is the result?()
A

 Au exception is thrown at runtime.

B

 “String is empty” is printed to output.

C

 Compilation fails because of au error in line 12.

D

 “String is not empty” is printed to output.


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更多 “单选题11. public static void test(String str) {  12. if(str == null | str.lellgth() == 0) {  13. System.out.println(”String is empty”);  14. } else {  15. System.out.println(”String is not empty”);  16. }  17. }  And the invocation:  31. test(llull);  What is the result?()A  Au exception is thrown at runtime.B  “String is empty” is printed to output.C  Compilation fails because of au error in line 12.D  “String is not empty” is printed to output.” 相关考题
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