Servlets :: How To Execute Batch And Exe File

Question : How to execute batch file & .exe file using jsp servlet?I am giving input for blast in the FASTA format. After that i wants to make the sequence.FASTA file in my project folder. And I wants to execute batch file with parameters as blastp.exe file, sequence. FASTA file, database files, output file.

There is no problem in the file creation of sequence.FASTA

ERROR IN: the batch file is not execute, So the I am not able to get the output file for display.

ERROR is : java.io.FileNotFoundException: D:vaibhav_workspace.metadata.pluginsorg.eclipse.wst.server.core mp4wtpwebapps oxin-dataoutputprotein.txt (The system cannot find the file specified)

Technologies Used :JSP,Servlet,Process-builder

I have the following code as :

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String values=request.getParameter("t1");
ServletContext servletContext = request.getSession().getServletContext();
servletContext = request.getSession().getServletContext();
String path="//sequence.FASTA"; /*file is created in getRealPath()*/

[Code]...

Here the getRealpath() is:

D:workspace.metadata.pluginsorg.eclipse.wst.server.core mp4wtpwebapps oxin-data

My all files in the project folder as toxin-data