package com.readfile.test;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.util.Scanner;

import junit.framework.TestCase;

/**

* ReadFileTest.java

*

* 计算文件的有效代码行数

*

* 2011-05-24 7:55

*

* @author timeless-bless

*

*/

public class ReadFileTest extends TestCase {

/**

* 读取文件方法

*

* @param fileName

* 文件名

*/

public static void testReadFileByLines() {

Scanner input = new Scanner(System.in);

System.out.print("请输入要计算的文件路径及文件名：");

String fileName = input.next();

File file = new File(fileName);

BufferedReader read = null;

try {

read = new BufferedReader(new FileReader(file));

String tempString = null;

int lines = 1;// 总行数

int linesNotNull = 0;// 有效行数

int linesNull = 0;// 空行

while (read.ready()) {

tempString = read.readLine();

if (tempString != null && !tempString.equals("")) {

System.out.print("\n行号：" + lines + " " + tempString);

linesNotNull++;

} else {

linesNull++;

}

lines++;

}

read.close();

System.out.print("\n文件(" + fileName + "的总行数为：" + (lines - 1)

+ "\n有效代码行数为：" + linesNotNull + " \n空行为：" + linesNull);

} catch (Exception e) {

e.printStackTrace();

}

}

}