BufferedWite

package day04;

import java.io.*;

public class Bufferwrite {

public static void main(String[] args) throws IOException {


File f = new File("d:\\a.txt");
if (!f.exists()) {
f.createNewFile();
}

BufferedWriter bw = new BufferedWriter(new FileWriter(f));

bw.write("今天是个好天气,不冷也不热");
bw.flush();
bw.close();

BufferedReader br = new BufferedReader(new FileReader(f));
String s;
//        int r ;
//        char[] a =new char[1024];
//        while ((r=br.read(a))!=-1) {
//            System.out.println(r);
//        }
while ((s=br.readLine())!=null) {
System.out.println(s);
}

br.close();
}

}