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简单小程序----代码行数计数器

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 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 
 9 public class CodeCounter {
10 
11     static int normalLines = 0;//普通行
12     static int commentLines = 0;//注释行
13     static int blankLines = 0;//空行
14     
15     
16     public static void main(String[] args) {
17         
18         File f = new File("D:/code");
19         File[] codeFile = f.listFiles();
20         for(File child :codeFile){
21             
22         if(child.getName().matches(".*\\.java$"));{
23             parse(child);
24         }
25         }
26         
27         
28         
29         System.out.println("normalLines = " + normalLines);
30         System.out.println("commentLines = " + commentLines);
31         System.out.println("blankLines = " + blankLines);
32     }
33 
34 
35     private static void parse(File f) {
36         BufferedReader br = null;
37         boolean comment = false;
38         try {
39             br = new BufferedReader(new FileReader(f));
40             String line = "";
41             while((line = br.readLine())!=null){
42                 line = line.trim();
43                 if(line.matches("^[\\s&&[^\\n]]*")){
44                     blankLines++;
45                 }else if(line.matches("/*")&&!line.endsWith("*/")){
46                     commentLines++;
47                     comment = true;
48             
49                 }else if( true == comment){
50                     commentLines++;
51                     if(line.endsWith("*/")){
52                         comment = false;
53                     }
54                 }else{
55                     normalLines++;
56                 }
57                 
58             }
59             
60         } catch (FileNotFoundException e) {
61             // TODO Auto-generated catch block
62             e.printStackTrace();
63         } catch (IOException e) {
64             // TODO Auto-generated catch block
65             e.printStackTrace();
66         }finally{
67             if(br!=null){
68                 try {
69                     br.close();
70                     br= null;
71                 } catch (IOException e) {
72                     // TODO Auto-generated catch block
73                     e.printStackTrace();
74                 }
75             }
76             
77         }
78         
79     }
80 
81 }

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