java发送16进制byte【】

import java.io.OutputStream;
import java.net.Socket;
 
public class HexSendExample {
    public static void main(String[] args) {
        String hexData = "48656C6C6F"; // "Hello" in hexadecimal
        byte[] data = hexStringToByteArray(hexData);
 
        try (Socket socket = new Socket("example.com", 1234)) {
            OutputStream out = socket.getOutputStream();
            out.write(data);
            out.flush();
            System.out.println("Data sent successfully.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public static byte[] hexStringToByteArray(String s) {
        int len = s.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
                                 + Character.digit(s.charAt(i+1), 16));
        }
        return data;
    }
}