给定一个源代码文件（.cs, .java），输出该文件的总行数、空行数、注释行数、代码行数

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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();     
	                 }     
	             }     
	         }     
	     }    
	 }    
	  

给定一个源代码文件（.cs, .java），输出该文件的总行数、空行数、注释行数、代码行数

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原文地址：http://blog.csdn.net/u013921527/article/details/45626637