正则表达式统计怎么统计空行、代码行、注释

Question

用这个程序测代码行、空行和注释行，老是显示都为0行，麻烦看看哪里错了啊

1. import java.io.BufferedReader;

2. import java.io.File;

3. import java.io.FileNotFoundException;

4. import java.io.FileReader;

5. import java.io.IOException;

6. 
   

7. 
   

8. public class CodeCounter {

10. static long codeLines = 0;

11. static long commentLines = 0;

12. static long whiteLines = 0;

14. public static void main(String[] args) {

15. File f = new File("D:\\Workspaces\\MyEclipse Professional 2014\\DOMTest\\src\\question");

16. File [] codeFiles = f.listFiles();

17. for (File file : codeFiles) {

18. if (file.getName().matches(".* \\.java$")) {

19. parse(file);

20. }

21. }

22. System.out.println(codeLines);

23. System.out.println(commentLines);

24. System.out.println(whiteLines);

25. }

26. 
    

27. private static void parse(File f) {

28. BufferedReader br = null;

29. boolean comment = false;

30. try {

31. br = new BufferedReader(new FileReader(f));

32. String line = "";

33. while ((line = br.readLine()) != null) {

34. line = line.trim();

35. if (line.matches("^[\\s&&[^\\n]]*$")) {

36. whiteLines++;

37. } else if (line.startsWith("/*") && line.endsWith("*/")) {

38. commentLines++;

39. comment = true;

40. } else if (true == comment) {

41. commentLines ++;

42. if (line.endsWith("*/")) {

43. comment = false;

44. }

45. } else {

46. codeLines ++;

47. }

48. }

49. } catch (FileNotFoundException e) {

50. e.printStackTrace();

51. } catch (IOException e) {

52. e.printStackTrace();

53. } finally {

54. if (br != null) {

55. try {

56. br.close();

57. br = null;

58. } catch (IOException e) {

59. e.printStackTrace();

60. }

61. }

62. }

63. }

64. }