java.io

来源：互联网发布：淘宝买家恶意退货编辑：程序博客网时间：2024/05/21 01:53

package iotest;

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

public class cwq {

        private static int whiteLines = 0;
        private static int commentLines = 0;
        private static int normalLines = 0;

        public static void main(String[] args) {
           File f = new File("E:\\workspace\\cwqq\\src\\iotest\\cwq.java");
           sumCode(f);
        }
        public static void sumCode(File file){
           BufferedReader br = null;
             boolean comment = false;
             try {
                 br = new BufferedReader(new FileReader(file));
                 String line = "";
                 try {
                     while ((line = br.readLine()) != null) {
                         line = line.trim();
                         if (line.matches("^[\\s&&[^\\n]]*$")) {
                             whiteLines++;
                         } else if (line.startsWith("/*") && !line.endsWith("*/")) {
                             commentLines++;
                             comment = true;
                         } else if (true == comment) {
                             commentLines++;
                             if (line.endsWith("*/")) {
                                 comment = false;
                             }
                         } else if (line.startsWith("//")) {
                                 commentLines++;
                         } else {
                             normalLines++;
                         }
                     }
                 } catch (IOException e) {
                         e.printStackTrace();
                 }
             } catch (FileNotFoundException e) {
                     e.printStackTrace();
             } finally {
                 if (br != null) {
                     try {
                         System.out.println("空行数："+whiteLines);
                         System.out.println("注释行数："+commentLines);
                         System.out.println("代码行数："+normalLines);
                         System.out.println("总行数:"+(whiteLines+commentLines+normalLines));
                         br.close();
                         br = null;
                     } catch (IOException e) {
                         e.printStackTrace();
                     }
                 }
             }
         }
   }

0 0