udp java

Question

String str = "003B000100000001201000004130303130303031303030303030303034343931393233353231393630323030343630303239323330393137303934003B000100000001201000004130303130303031303030303030303034343931393233353231393630323030343630303239323330393137303934";
                ByteArrayOutputStream byteStream = new ByteArrayOutputStream(
                        500);
                ObjectOutputStream os = new ObjectOutputStream(new
                        BufferedOutputStream(byteStream));
                os.writeObject(str);
                os.flush();                byte[] message = byteStream.toByteArray();                ds.connect(target, end);                      DatagramPacket packet = new DatagramPacket(message,
                        message.length, target, end);                 System.out.println(packet.getLength());
                 
                ds.send(packet);
                
                ds.close();这样的格式转换对吗?

Answer 1

String变量提供了一个getBytes()方法可以直接的到byte数组。