[Java] BufferedReader/BufferedWriter 缓冲读取和写入字符

import java.io.*;
public class CopyFileTest3{
public static void main(String[] args) throws IOException {
FileReader fr = new FileReader("1.txt");
BufferedReader br = new BufferedReader(fr);

FileWriter fw = new FileWriter("2.txt");
BufferedWriter bw = new BufferedWriter(fw);

String read = br.readLine();
while(read!=null){
bw.write(read);
bw.newLine();
read = br.readLine();
}
br.close();
bw.flush();
bw.close();

}
}
//BufferedReader/BufferedWriter的读写速度比其它的都快