缓冲流

字符缓冲流 和字节缓冲流基本一样

public class ByteBufferDemo {
    public static void main(String[] args) {
        try (InputStream is = new FileInputStream("E:\\idea_java_project\\io_project\\src\\data.txt");
            //把原始的字节输入流包装成高级的缓冲字节流输入流
             InputStream bis = new BufferedInputStream(is);

             OutputStream os = new FileOutputStream("E:\\idea_java_project\\io_project\\src\\data33.txt");
            //把字节输出流管道包装成高级的缓冲字节输出流管道
             OutputStream bos = new BufferedOutputStream(os);
        ){
            byte[] buffer = new byte[1024];
            int len;
            while((len = bis.read()) != -1){
                bos.write(buffer,0,len);
            }
            System.out.println("复制完成");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}