Ikk：新頁面: Given: 1. public class TestString3{ 2. public static void main(String[] args){ 3. //insert code here 5. System.out.println(s); 6. } 7. } Which two code fragments,...

2013-03-30T02:29:52Z

新頁面: Given: 1. public class TestString3{ 2. public static void main(String[] args){ 3. //insert code here 5. System.out.println(s); 6. } 7. } Which two code fragments,...

新頁面

Given:
1. public class TestString3{
2. public static void main(String[] args){
3. //insert code here
5. System.out.println(s);
6. }
7. }

Which two code fragments, inserted independently at line 3, generate the output 4247? (choose two.)
A. String s = "123456789";
s = (s - "123").replace(1, 3, "24") - "89";
B. StringBuffer s = new StringBuffer("123456789");
s.delete(0, 3).replace(1, 3, "24").delete(4, 6);
C. StringBuffer s = new StringBuffer("123456789");
s.substring(3, 6).delete(1, 3).insert(1, "24");
D. StringBuilder s = new StringBuilder("123456789");
s.substring(3, 6).delete(1, 2).insert(1, "24");
E. StringBuilder s = new StringBuilder("123456789");
s.delete(0, 3).delete(1, 3).delete(2, 5).insert(1, "24");

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<span style="font-size:medium;">解答</span>

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<span style="font-size: medium;">Ans: B E </span>

<span style="font-size:medium;"> 解說:
第3行分別地插入那二個敘述可以輸出4247？
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{{SCJP 1.6版考題講解}}

SCJP 1.6版考題 163 - 修訂歷史

Ikk：新頁面: Given: 1. public class TestString3{ 2. public static void main(String[] args){ 3. //insert code here 5. System.out.println(s); 6. } 7. } Which two code fragments,...