VoteServlet.java

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class VoteServlet
 */
@WebServlet("/VoteServlet")
public class VoteServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public VoteServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		PrintWriter pw = response.getWriter();
		response.setContentType("text/html");
		String year = request.getParameter("yy");
		int y = Integer.parseInt(year);
		if(2019-y >= 18) {
			pw.print("ELIGIBLE !!!");
		}
		else {
			pw.print("NOT ELIGIBLE !!!");
		}
	}

}