98. Given:
13. public class Test {
14. public static void main (String [] args) {
15. StringBuffer a = new StringBuffer (“A”);
16. StringBuffer b = new StringBuffer (“B”);
17. operate (a,b);
18. system.out.printIn{a + “,” +b};
19. )
20. static void operate (StringBuffer x, StringBuffer y) {
21. y.append (x);
22. y = x;
23. )
24. }
What is the result?
A.The code compiles and prints “A,B”.
B.The code compiles and prints “A, BA”.
C.The code compiles and prints “AB, B”.
D.The code compiles and prints “AB, AB”.
E.The code compiles and prints “BA, BA”.
F.The code does not compile because “+” cannot be overloaded for stringBuffer.
[此贴子已经被作者于2006-8-10 11:16:37编辑过]
----------------解决方案--------------------------------------------------------
13. public class Test {
14. public static void main (String [] args) {
15. StringBuffer a = new StringBuffer (“A”);
16. StringBuffer b = new StringBuffer (“B”);
17. operate (a,b);
18. system.out.printIn{a + “,” +b};
19. )
20. static void operate (StringBuffer x, StringBuffer y) {
21. y.append (x);
22. y = x;
23. )
24. }
----------------解决方案--------------------------------------------------------
楼上什么意思啊.........
----------------解决方案--------------------------------------------------------