Go语言视频零基础入门到精通

无敌风飒

import java.io.*;
import java.util.regex.*;
//代码统计
public class CodeCounter {
static int count_y = 0;
static int count_z = 0;
static int count_k = 0;
public static void main(String[] args) {
  File f = new File("D:\\SOL\\");
  File[] codeFiles = f.listFiles();
  for(File child : codeFiles){
   if(child.getName().matches(".*\\.java$")) {
    parse(child);
   }
  }
  
  System.out.println("有效代码： " + count_y + " 行 ");
  System.out.println("注释代码： " + count_z + " 行 ");
  System.out.println("空白代码： " + count_k + " 行 ");
}

private static void parse(File f) {
  BufferedReader br = null;
  boolean flag = false;
  try {
   br = new BufferedReader(new FileReader(f));
   String line = "";
   while((line = br.readLine()) != null) {
    line = line.trim();
    if(line.matches("^[\\s&&[^\\n]]*$")) {
     count_k++;
    }else if(line.startsWith("/*") && !line.endsWith("*/")){
     count_z++;
     flag = true;
    }else if(line.startsWith("/*") && line.endsWith("*/")) {
     count_z++;
    }else if(true == flag) {
     count_z++;
     if(line.endsWith("*/")) {
      flag = false;
     }
    }else if(line.startsWith("//")){
     count_z++;
    }else {
     count_y++;
    }
   }
  }catch (Exception e) {
   e.printStackTrace();
  }finally {
   if(br != null) {
    try{
     br.close();
     br = null;
    }catch (Exception e) {
     e.printStackTrace();
    }
   }
  }
}

}