java代码统计器CodeCounter

这个小程序能有效统计自己某个项目文件夹（包括子目录）下.java文件的有效代码行数、注释行数、空白行数，

试试吧。

package com.zhanglei.Java;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class CodeCounter {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

Counter c = new Counter('D:\\Android_space\\test\\src\\');//在这里修改目录

c.countJavaFile(c.projectPath);

}

}

class Counter {

String projectPath;

long blankLineNum = 0l;

long zhushiLineNum = 0l;

long codeLineNum = 0l;

public Counter(String projectPath) {

super();

this.projectPath = projectPath;

}

public void countJavaFile(String path) {

File f = new File(path);

if (f.isDirectory()) {

File[] childFiles = f.listFiles();

for (int i = 0; i < childFiles.length; i ) {

countJavaFile(childFiles[i].getAbsolutePath());

}

} else {

if (f.getName().matches('.*\\.java$')) {// 判断文件是否为.java文件

// blankLineNum = 0l;

// zhushiLineNum = 0l;

// codeLineNum = 0l;

parse(f);

}

}

}

public void parse(File f) {

BufferedReader br = null;

try {

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

String line = '';

Pattern blankP = Pattern.compile('^[\\s&&[^\\n]]*');

Matcher blankM;

boolean comment = false;

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

line=line.trim();

blankM = blankP.matcher(line);

if (blankM.matches()) {

blankLineNum ;

} else if (line.startsWith('/*') && !(line.endsWith('*/'))) {

comment = true;

zhushiLineNum ;

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

zhushiLineNum ;

} else if (true == comment) {

zhushiLineNum ;

if (line.startsWith('*/')) {

comment = false;

}

} else if(line.startsWith('//')) {

zhushiLineNum ;

}

else {

codeLineNum ;

}

}

System.out.println('文件' f.getAbsolutePath() ':累计空行数：' blankLineNum ' ,累计注释行数：'

zhushiLineNum ' ,累计代码行数：' codeLineNum);

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

if (br != null) {

try {

br.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

}