07JavaIO详解_字符流

package com.guigu.shen.StreamTest;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class StreamTest {
public static void main(String[] args) throws Exception {
    //节点流
    FileOutputStream fos=new FileOutputStream("file.txt");
     OutputStreamWriter os=new OutputStreamWriter(fos);
//加入缓冲的功能
BufferedWriter bufferedWriter=new BufferedWriter(os);
//写入文件
bufferedWriter.write("aaaaaaaaaaaaaaaaa");
bufferedWriter.write("\n");
bufferedWriter.write("bbbbbbbbbbbbbbb");
bufferedWriter.close();
  

/*
 * 从文件读的功能
 */
//节点流
FileInputStream fis=new FileInputStream("file.txt");

InputStreamReader isr=new InputStreamReader(fis);
//装饰模式
BufferedReader br=new BufferedReader(isr);
//把每一行都读出来
 String str=br.readLine();
 
 while(null!=str)
 {
System.out.println(str);
 str=br.readLine();
     
     
 }

br.close();




}
}