java字符缓冲流和打印流(BufferedReaderBufferedWriterPrintWriter)

package com.seven.bufferedReader;

import java.io.*;


public class TestBufferedReader {
    public static void main(String[] args) throws Exception {
        BufferedReader bufferedReader = new BufferedReader(new FileReader("D:\a.txt"));
        while (true){
            String s = bufferedReader.readLine();
            if (s==null) break;
            System.out.println(s);
        }

        //写入
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter("d:\b.txt"));
        for (int i = 0; i < 9; i++) {
            bufferedWriter.write(97);//结果是写入a
            bufferedWriter.write("我是中国人",1,3);
            bufferedWriter.newline();//换行：这个会适应不同系统，比n
            bufferedWriter.flush();
        }
        bufferedWriter.close();
        bufferedReader.close();

        PrintWriter printWriter = new PrintWriter("d:\t.txt");
        printWriter.println(98);//打印结果为98而不是a
        printWriter.println(true);
        printWriter.print('A');
        printWriter.print("我是");
        printWriter.flush();//缓冲区的内容强制的写出
        printWriter.close();
    }
}