项目结构：

运行效果：

========================================================

下面是代码部分：

========================================================

/Text/src/com/b510/txt/MyFile.java

复制代码 代码如下:

package com.b510.txt;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

/**

* @author Hongten

*

* @time 2011-12-12 2011

*/

public class MyFile {

@SuppressWarnings("static-access")

public static void main(String[] args) {

MyFile myFile = new MyFile();

try {

for (int i = 0; i < 5; i++) {

&nwww.cppcns.com{

filename.createNewFile();

flag = true;

}

return flag;

}

/**

* 写文件

*

* @param newStr

&nbhttp://www.cppcns.comp;    pw.close();

}

if (fos != null) {

fos.close();

}

if (br != null) {

br.close();

}

if (isr != null) {

isr.close();

}

if (fis != null) {

fis.close();

}

}

return flag;

}

/**

* 读取数据

*/

public void readData1() {

try {

FileReader read = new FileReader(filenameTemp);

BufferedReader br = new BufferedReader(read);

String row;

while ((row = br.readLine()) != null) {

System.out.println(row);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

public String readDate() {

// 定义一个待返回的空字符串

String strs = "";

try {

FileReader read = new FileReader(new File(filenameTemp));

StringBuffer sb = new StringBuffer();

&nbwww.cppcns.comsp;      char ch[] = new char[1024];

int d = read.read(ch);

while (d != -1) {

String str = new String(ch, 0, d);

sb.append(str);

d = read.read(ch);

}

System.out.print(sb.toString());

String a = sb.toString().replaceAll("@@@@@", ",");

strs = a.substring(0, a.length() - 1);

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return strs;

}

}

本文标题: java开发之读写txt文件操作的实现

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