统计有效、空行、注解代码行数

package com.fr24.dai.regEx;

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

public class CountCode {

static long normalLines = 0l;
static long commmentLines = 0l;
static long whiteLines = 0l;

public static void main(String[] args) {
// String fileName = ReadPropertiesUtils.getPropertiesValueByKey("/resource/fileName.properties", "fileName");
String fileName = "F:\\Desktop\\code";
File f = new File(fileName);
if (f.isDirectory()) {
countCode(f);
}
p("normalLines:" + normalLines);
p("commentLines:" + commmentLines);
p("whiteLines:" + whiteLines);
}

private static void countCode(File f) {
File[] childs = f.listFiles();
for (File file : childs) {
if (file.isDirectory()) {
countCode(file);
}
if (file.getName().matches(".*\\.java$")) {
parse(file);
}
}
}

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();
if (line.matches("//.*")) {
++commmentLines;
} else if (line.matches("^/\\*.*\\*/$")) {
++commmentLines;
} else if (comment) {
++commmentLines;
if (line.matches(".*\\*/$")) {
comment = false;
}
} else if (line.matches("^/\\*.*[^\\*/$]")) {
++commmentLines;
comment = true;
} else if (!comment &&line.matches("[\\s&&[^\\n]]*")) {
++whiteLines;
} else {
++normalLines;
}

}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

public static void p(Object o) {
System.out.println(o);
}

}