SCJP 1.6版考題 151

Given that the current directory is empty, 
and that the user has read and write privileges to the current directory, and the following:
1. import java.io.*;
2. public class Maker{
3.   public static void main(String args){
4.     File dir = new File("dir");
5.     File f = new File(dir, "f");
6.   }
7. }

Which statement is true?
 A. Compilation fails.
 B. Nothing is added to the file system.
 C. Only a new file is created on the file system.
 D. Only a new directory is created on the file system.
 E. Both a new file and a new directory are created on the file system.

解答

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Ans: B

解說:

4/5行只是宣告目錄、檔案
真正建立檔案的方法是createNewFile()，例子如145