Java字符缓冲流

字符缓冲流
BufferedWriter
BufferedReader
区分字节缓冲流
BufferOutputStream
BufferedInputStream

案例1，写数据

package demo4;

import java.io.*;

public class BufferedStreamDemo01 {
    public static void main(String[] args) throws IOException {
        //BufferedWriter(Writer out)

        //字符缓冲流写数据到txt，输出流
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("SocketXml\\src\\student.owl")));

        bw.write("hello,你好\r\n");
        bw.write("world,世界\r\n");

        bw.close();

    }
}

案例2，读数据

两种方式

1. 一次读取一个字符数据
2. 一次读取一个字符数组数据

package demo4;

import java.io.*;

public class BufferedStreamDemo02 {
    public static void main(String[] args) throws IOException {
//        BufferedReader(Reader in)
         BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("SocketXml\\src\\student.owl")));

//        一次读取一个字符数据
//        int ch;
//        while ((ch=br.read())!=-1) {
//            System.out.print((char)ch);
//        }

        //一次读取一个字符数组数据
        char[] chs = new char[1024];
        int len;
        while ((len=br.read(chs))!=-1) {
            System.out.print(new String(chs,0,len));
        }

        br.close();
    }
}