JSP,JDBC ,Servlets

[Pradyumna Sahoo]

public class DataRetrive extends HttpServlet {
	private static final long serialVersionUID = 1L;
	public static String source ;
	public static String destination;

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		 source = request.getParameter("source");
		destination = request.getParameter("destination");
		if(source.equals(destination)){
			request.getRequestDispatcher("Index.html").forward(request,response);
			}
		
	}

}

[Pradyumna Sahoo]

Well there are two dropdown list , one is Source and one is destination , when the user sets a source and a destination , he ll get the busno. How I can do that