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();
}
}
}
}
}