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Java认证考试

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10. class MakeFile {  11. public static void main(String[] args) {  12. try {  13. File directory = new File(”d”);  14. File file = new File(directory,”f”);  15. if(!file.exists()) {  16. file.createNewFile();  17. }  18. } catch (IOException e) {  19. e.printStackTrace  20. }  21. }  22. }  The current directory does NOT contain a directory named “d.” Which three are true?()

  • A、 Line 16 is never executed.
  • B、 An exception is thrown at runtime.
  • C、 Line 13 creates a File object named “d”.
  • D、 Line 14 creates a File object named “f‟.
  • E、 Line 13 creates a directory named “d” in the file system.
  • F、 Line 16 creates a directory named “d” and a file  “f”  within it in the file system.
  • G、 Line 14 creates a file named "f " inside of the directory named “d” in the file system.
正确答案:B,C,D
答案解析:
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