How do I make a Datagram Packet from a String?

Question

I am looking to make a Datagram Packet from a string. If I send a command to a server that allows remote connections via UDP, such as "restart" it will restart the server. I can accomplish this easily through the fput() method of PHP.
I want a Java version of my utility, and am using the DatagramSocket and DatagramPacket classes. I see that I need to make a byte array and put it inside a DatagramPacket. How would I go about putting the string "restart" into a byte array?
Thanks,

Answer 1

Use the following code to send a Datagram:-
import java.io.*;
import java.net.*;
// This class sends the specified text as a datagram to port 6010 of the
// specified host.
public class UDPSend {
    static final int port = 6010;
    public static void main(String args[]) throws Exception {
        if (args.length != 2) {
            System.out.println("Usage: java UDPSend <hostname> <message>");
            System.exit(0);
        // Get the internet address of the specified host
        InetAddress address = InetAddress.getByName(args[0]);
        // Convert the message to an array of bytes
        int msglen = args[1].length();
        byte[] message = new byte[msglen];
        args[1].getBytes(0, msglen, message, 0);
        // Initilize the packet with data and address
        DatagramPacket packet = new DatagramPacket(message, msglen,
                               address, port);
        // Create a socket, and send the packet through it.
        DatagramSocket socket = new DatagramSocket();
        socket.send(packet);
}This uses argments, if you want a string change the code accordingly.