javaIO流缓冲字符流

class FilesDemo2{
public static void main(String[] args){

try(FileWriter fw = new FileWriter("D:\\java\\iotest\\Stream.txt");
BufferedWriter bw = new BufferedWriter(fw);
FileReader fr = new FileReader("D:\\java\\iotest\\Stream.txt");
BufferedReader br = new BufferedReader(fr);
FileWriter fw1 = new FileWriter("D:\\java\\iotest\\buffered.txt");
BufferedWriter bw1 = new BufferedWriter(fw1);
){
bw.write("刘备，打龙啦，快去抢");
bw.flush();
char[] a = new char[24];
int len = -1;
while((len = br.read(a))!=-1){
bw1.write(new String(a,0,len));
System.out.println(new String(a,0,len));
}

}catch(IOException e){
e.printStackTrace();
}
}