SCJP題庫第177題

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.

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);  
  }
}

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