How to execute batch file from JSP

hi frens !
i wanna know how to execute batch file from my JSP.i am using exec() method to get call the batch file. but its not working ....plz help
here mine code:-
File F = new File("C:/var.bat");
     try{
      if (F.exists())
        Runtime rt = Runtime.getRuntime();
        String url=F.getAbsolutePath();
         Process proc = rt.exec(url);
        proc.waitFor();
        proc.destroy();
        catch(Exception IOEx){
       System.out.println(IOEx);
}Thanks and Regards
Allwyn

You might improve your chances of getting help if you do two things:
1) Explain what "not working" means.
2) ChangeSystem.out.println(IOEx); to IOEx.printStackTrace(); (in the eventhat is in fact related to "not working").

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[http://oracle.ittoolbox.com/groups/technical-functional/oracle-jdeveloper-l/run-an-exe-file-using-oracle-database-trigger-1567662]
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Dear Peter,
You are totally right, I got this as mistake copy paste. I'm just having a Java utility for running external files outside Oracle DB, this is the method runFile()
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