34.2 字节流 InputStreamReader OutputStreamWriter
使用方法同字符流,不一样的是数据类型是字节
copydemo
public static void main(String[] args) throws IOException { InputStream ips = new FileInputStream("D:\\java\\a.jpg"); OutputStream ops = new FileOutputStream("test.jpg"); byte[] by = new byte[5]; int len; while ((len=ips.read(by))!=-1) { ops.write(by,0,len); ops.flush(); } ops.close(); ips.close(); }