统计你写的java代码行数

http://blog.youkuaiyun.com/suwanjun881011/article/details/4475967

1. importjava.io.BufferedReader;
2. importjava.io.File;
3. importjava.io.FileNotFoundException;
4. importjava.io.FileReader;
5. importjava.io.IOException;
7. /**
8. *
9. *@authorjun
10. *
11. */
12. publicclassSumJavaCode{
14. staticlongnormalLines=0;//空行
15. staticlongcommentLines=0;//注释行
16. staticlongwhiteLines=0;//代码行
18. publicstaticvoidmain(String[]args){
19. SumJavaCodesjc=newSumJavaCode();
20. Filef=newFile("D://spring-framework-2.0-with-dependencies//spring-framework-2.0");
21. System.out.println(f.getName());
22. sjc.treeFile(f);
24. System.out.println("空行："+normalLines);
25. System.out.println("注释行："+commentLines);
26. System.out.println("代码行："+whiteLines);
27. }
29. /**
30. *查找出一个目录下所有的.java文件
31. *
32. *@paramf要查找的目录
33. */
34. privatevoidtreeFile(Filef){
36. File[]childs=f.listFiles();
37. //intcount=0;
38. //intsum=0;
39. for(inti=0;i<childs.length;i++){
40. //System.out.println(preStr+childs[i].getName());
41. if(!childs[i].isDirectory()){
42. if(childs[i].getName().matches(".*//.java$")){
43. System.out.println(childs[i].getName());
44. //count++;
45. sumCode(childs[i]);
46. }
47. }else{
48. treeFile(childs[i]);
49. //sum+=count;
50. }
51. }
52. }
54. /**
55. *计算一个.java文件中的代码行，空行，注释行
56. *
57. *@paramfile
58. *要计算的.java文件
59. */
60. privatevoidsumCode(Filefile){
61. BufferedReaderbr=null;
62. booleancomment=false;
63. try{
64. br=newBufferedReader(newFileReader(file));
65. Stringline="";
66. try{
67. while((line=br.readLine())!=null){
68. line=line.trim();
69. if(line.matches("^[//s&&[^//n]]*$")){
70. whiteLines++;
71. }elseif(line.startsWith("/*")&&!line.endsWith("*/")){
72. commentLines++;
73. comment=true;
74. }elseif(true==comment){
75. commentLines++;
76. if(line.endsWith("*/")){
77. comment=false;
78. }
79. }elseif(line.startsWith("//")){
80. commentLines++;
81. }else{
82. normalLines++;
83. }
84. }
85. }catch(IOExceptione){
86. e.printStackTrace();
87. }
88. }catch(FileNotFoundExceptione){
89. e.printStackTrace();
90. }finally{
91. if(br!=null){
92. try{
93. br.close();
94. br=null;
95. }catch(IOExceptione){
96. e.printStackTrace();
97. }
98. }
99. }
100. }
102. }