自己编的代码统计程序
统计一个文件夹中所有.java文件里有多少空白行，多少代码行，多少注释行
package com.jason;
import java.io.*;
import java.util.regex.*;
public class CoutLines {
static int commentLines = 0;
static int blackLines = 0;
static int codeLines = 0;
public static void main(String args[]) {
File f= new File("D:\\code");
File [] fileList = f.listFiles();
for(int i =0;i<fileList.length;i++) {
if(fileList[i].getName().endsWith("java")){
parse(fileList[i]);
}
}
System.out.println("代码行有:"+codeLines);
System.out.println("空白行有:"+blackLines);
System.out.println("注释行有:"+commentLines);
}
private static void parse(File f) {
boolean flag = false;
Pattern p = Pattern.compile("^[\\s&&[^\\n]]*");
Matcher m = null;
try {
BufferedReader br = new BufferedReader(new FileReader(f));
String s = "";
try {
while((s = br.readLine())!=null){
s = s.trim();
m = p.matcher(s);
if(s.startsWith("/*")&&!s.endsWith("*/")){
commentLines++;
flag = true;
}
else if(true == flag) {
commentLines++;
if(s.endsWith("*/")){
flag = false;
}
}
else if(s.startsWith("/*")&&s.endsWith("*/")){
commentLines ++;
}
else if(s.startsWith("//")){
commentLines++;
}
else if(m.matches()){
blackLines++;
}
else
codeLines++;
}
} catch (IOException e) {
e.printStackTrace();
}
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
