JAVA_字符流类

package com.kk.review;

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

public class CharStream {
    /*
     * Reader
            BufferedReader
                LineNumberReader
            CharArrayReader
            FilterReader
                PushbackReader
            InputStreamReader //实现字节流转化为字符流
                FileReader
            PipedReader
            StringReader
        
        Writer
            BufferedWriter
            CharArrayWriter
            FilterWriter
            OutputStreamWriter//实现字节流转化为字符流
                FileWriter
            PipedWriter
            PrintWriter
            StringWriter
     */
    public static void main(String[] args) {
        try {
            FileInputStream file=new FileInputStream("1.txt");//字节流
            InputStreamReader isr=new InputStreamReader(file);//将字节流转为字符流
            BufferedReader br=new BufferedReader(isr);//可以缓冲的字符流类
            System.out.println(br.readLine());
            file.close();
            
            FileOutputStream fos=new FileOutputStream("1.txt"); //字节流
            OutputStreamWriter osw=new OutputStreamWriter(fos);//将字符流转为字节流
            BufferedWriter bw=new BufferedWriter(osw);//带缓冲的字符流类
            bw.write("哈哈");
            fos.close();
            
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}