closing command prompt using java

import java.io.*;
import javax.swing.JOptionPane;
import java.net.BindException;
class Loader
{
    public static void main(String as[])
    {
        try
        {
            System.out.println("Loading application.........");

             //pass the name of your exe in place of my.exe
             Process p = Runtime.getRuntime().exec("my.exe");

             //getting inputstream reader from process
             BufferedReader reader = new BufferedReader
                                     (newInputStreamReader(p.getInputStream()));

             String line = reader.readLine();

              //exit from this class when get "Loaded" from your application
              while (line.equals("Loaded") == false)
               {
                       line = reader.readLine();
               }
                reader.close();
            }
            catch (Exception e)
            {
            }
    }
}