代码量统计

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
* 代码量统计
* @author wjl
*
*/

public class CodeCounter {

static long normalLines = 0;
static long commentLines = 0;
static long whiteLines = 0;

public static void main(String[] args) {

File f = new File("D:\\test");
File[] codeFiles = f.listFiles();
for(File child: codeFiles){
if (child.getName().matches(".*\\.java$")) {
parse(child);
}
}


System.out.println("normalLines="+normalLines);
System.out.println("commentLines="+commentLines);
System.out.println("whiteLines="+whiteLines);

}

private static void parse(File f) {
BufferedReader br = null;
boolean comment = false;
try {
br = new BufferedReader(new FileReader(f));
String line = "";
while ((line = br.readLine()) != null) {
line = line.trim();
//readline方法读出来时候已经去掉换行符
if(line.matches("^[\\s&&[^\\n]]*$")){
whiteLines ++;
}
else if(line.startsWith("/*")&&!line.endsWith("*/")){
commentLines ++;
comment = true;
}
else if(line.startsWith("/*")&&line.endsWith("*/")){
commentLines ++;
}
else if(true == comment){
commentLines++;
if(line.endsWith("*/"))
comment = false;
}
else if(line.startsWith("//")){
commentLines++;
}
else
normalLines ++;

}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}

}
}

}