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();
}
}
} }
}
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