* Taken from Core Servlets and JavaServer Pages * from Prentice Hall and Sun Microsystems Press, * http://www.coreservlets.com/. * © 2000 Marty Hall; may be freely used or adapted. */ public class ShowMessage extends HttpServlet { private String message; private String defaultMessage = "No message."; private int repeats = 1; public void init(ServletConfig config) throws ServletException { // Always call super.init super.init(config); message = config.getInitParameter("message"); if (message == null) { message = defaultMessage; } try { String repeatString = config.getInitParameter("repeats"); repeats = Integer.parseInt(repeatString); } catch(NumberFormatException nfe) { // NumberFormatException handles case where repeatString // is null *and* case where it is something in an // illegal format. Either way, do nothing in catch, // as the previous value (1) for the repeats field will // remain valid because the Integer.parseInt throws // the exception *before* the value gets assigned // to repeats. } } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String title = "The ShowMessage Servlet"; out.println(ServletUtilities.headWithTitle(title) + "
\n" + "