import java.io.*;public class mode4 {public static void main(String[] args) throws IOException {//利用缓冲流去拷贝文件//创建一个字节缓冲输入流//在底层默认创建了一个长度为8192的字节数组BufferedInputStream bis = new BufferedInputStream(new FileInputStream("D:\\a.txt"));//在底层默认创建了一个长度为8192的字节数组BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("IoFile\\a.txt"));int b ;while ((b = bis.read()) != -1){bos.write(b);}bis.close();bos.close();}
}