Socket stays open after java process exits, Runtime.exec()

Question

I have a program that does the following:
opens a socket
Does a runtime.exec() of another program
then the main program exits.
what i am seeing is, as long as the exec'd program is running, the socket remains open.
What can i do to get the socket to close?
I even tried to explicity call close() on it, and that didn't work. Any ideas would be great.
I am running this on WindowsXP using netstat to monitor the port utilization.
here is some sample code
import java.io.*;
import java.net.*;
public class ForkTest
    public static void main(String[] args)
        try
            DatagramSocket s = new DatagramSocket(2006);
            Process p = Runtime.getRuntime().exec("notepad.exe");
            System.out.println("Press any key to exit");
            System.in.read();
        catch (IOException ex)
            ex.printStackTrace();
}

Answer 1

java.net.BindException: Address already in use: Cannot bind
        at java.net.PlainDatagramSocketImpl.bind(Native Method)
        at java.net.DatagramSocket.bind(DatagramSocket.java:368)
        at java.net.DatagramSocket.<init>(DatagramSocket.java:210)
        at java.net.DatagramSocket.<init>(DatagramSocket.java:261)
        at java.net.DatagramSocket.<init>(DatagramSocket.java:234)
        at ForkTest.main(ForkTest.java:11)