SCJP 1.6版考題 177

Given:
11. String test = "This is a test";
12. String[] tokens = test.split(“\s");
13. System.out.println(tokens.length);

What is the result?
 A. 0
 B. 1
 C. 4
 D. Compilation fails.
 E. An exception is thrown at runtime.

解答

---

Ans: D

解說:

\s倒斜線是表示逸出字元，在C/Java裏沒有定義\s這個逸出字元，程式改成：
class test{
  public static void main(String[] args) {
    String test = "This is a test";
    String[] tokens = test.split(" ");
    System.out.println(tokens.length);  
  }
}