<http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Runtime.html#exec(java.lang.String)>
(and overloaded variants) though it might make more sense
to 'exec' the individual commands in the .bat file of interest.

HTH

see http://mindprod.com/jgloss/exec.html

I have a sample code which shows how to run a .bat file (or any
executable file from java). :

import java.io.*;
class test{
  public static void main(String arg[]){
       try{
    String command = "cmd /C start C:/test.bat ";
    Runtime rt = Runtime.getRuntime();
    Process pr = rt.exec(command);

       }catch (IOException e) {
    e.printStackTrace();
       }
   }
}

Here the .bat file is present in c:\test folder.
Hope this will b of help to u.

Meidan:

Something like:
Runtime.exec("command.com /c your.bat");