I need help getting this accomplished. I think I'm close but I get confused because I'm a novice at java.
I'm trying to implement a ping client that accepts the hostname and the port. I have to send packets across with the following: PING, the sequence number which is the packet numbers 0-9, the time the packet was sent and CLRF. When each packet goes over it has to wait 1 sec for a reply.

Now one of my delimnas is (1) how do I get the time appeneded to my strings and (2) how do I wait 1 sec before I send another packet. Can someone help me to figure out how to implement what I'm trying to do?

This is what I have so far:

Java Code:
import java.io.*;
import java.net.*;
import java.util.*;
import java.net.InetAddress.*;

 * Client to process ping requests over UDP.
public class PingClient
   private static final double WAIT = 0.1;

   public static void main(String[] args) throws Exception
      // Get command line argument.Make sure host and port are intialized
      if (args.length != 2) {
         System.out.println("Required arguments: port, host, or both");

     int port = Integer.parseInt(args[1]);
     String hostname = args[0];

      // Create a datagram socket for receiving and sending UDP packets
      // through the port specified on the command line.
      DatagramSocket socket = new DatagramSocket(port);

       //Invokes DNS lookup that translates the hostname to an IP address
       InetAddress IPAddress = InetAddress.getByName("hostname");

       //will hold the data the client sends and receives
       byte[] sendData = new byte[1024];
       byte[] receiveData = new byte[1024];
       //Setting up packets message
       String packet0 = "PING 0";
       String packet1 = "PING 1";
       String packet2 = "PING 2";
       String packet3 = "PING 3";
       String packet4 = "PING 4";
       String packet5 = "PING 5";
       String packet6 = "PING 6";
       String packet7 = "PING 7";
       String packet8 = "PING 8";
       String packet9 = "PING 9";

       //converts the string into bytes
       sendpacket0 = packet0.getBytes();
       sendpacket2 = packet1.getBytes();
       sendpacket3 = packet1.getBytes();
       sendpacket4 = packet1.getBytes();
       sendpacket5 = packet1.getBytes();
       sendpacket6 = packet1.getBytes();
       sendpacket7 = packet1.getBytes();
       sendpacket8 = packet1.getBytes();
       sendpacket9 = packet1.getBytes();

       // Create a datagram packet to send outgoing UDP packet.
       DatagramPacket request0 = new DatagramPacket(sendpacket0, 1024, PortDayTime);
       DatagramPacket request1 = new DatagramPacket(sendpacket1, 1024, PortDayTime);
       DatagramPacket request2 = new DatagramPacket(sendpacket2, 1024, PortDayTime);
       DatagramPacket request3 = new DatagramPacket(sendpacket3, 1024, PortDayTime);
       DatagramPacket request4 = new DatagramPacket(sendpacket4, 1024, PortDayTime);
       DatagramPacket request5 = new DatagramPacket(sendpacket5, 1024, PortDayTime);
       DatagramPacket request6 = new DatagramPacket(sendpacket6, 1024, PortDayTime);
       DatagramPacket request7 = new DatagramPacket(sendpacket7, 1024, PortDayTime);
       DatagramPacket request8 = new DatagramPacket(sendpacket8, 1024, PortDayTime);
       DatagramPacket request9 = new DatagramPacket(sendpacket9, 1024, PortDayTime);