Como posso inserir e excluir valor em um banco de dados em derby em JSP? [3]

<a href="DeleteServlet?id=<%=Integer.toString(person.getID())%>">Delete</a>

@WebServlet(name = "DeleteServlet", urlPatterns = {"/DeleteServlet"})
public class DeleteServlet extends HttpServlet {

/**
     * 
     */
    private static final long serialVersionUID = 1L;
private static final Logger LOGGER = Logger.getLogger(CurdOperationsImpl.class.getName());

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        String ID = request.getParameter("id");


            int id = Integer.parseInt(PersonId);

            deleteClient(id); // add your own code

            out.println("<h2 style='color: green'>Person Deleted Sucessfully.</h2>");
            response.sendRedirect("index.jsp");
        }else {

        }
    }