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javaIO流实现读写txt文件

javaIO流实现文件读写

文件写入:

InputStreamReader 
BufferedReader

文件读取:
FileOutputStream 

 

 

package javatest.basic22;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class IOReadTest {

    public static void main(String[] args) {
    //写入文件路径 File f2
=new File("c:/add44.txt");
    //读取文件路径 File f
=new File("c:/add.txt"); BufferedReader read=null; FileOutputStream fos=null; try {
        //读取并解决中文乱码问题
        //创建读取流 InputStreamReader isr
= new InputStreamReader(new FileInputStream(f), "UTF-8");
        //开始读取 read
= new BufferedReader(isr);
        //创建写入流 fos
=new FileOutputStream(f2); String str=null; int line=1; while ((str=read.readLine())!=null) { System.out.println(str);
        //循环写入 fos.write((str
+"\t\n").getBytes()); line++; }
      //关闭流对象 fos.flush(); fos.close(); read.close(); }
catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ if (read!=null) { try { fos.flush(); fos.close(); read.close(); } catch (IOException e) { e.printStackTrace(); } } } } }