package cwp; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; /** Example using servlet initialization. Here, the message * to print and the number of times the message should be * repeated is taken from the init parameters. *

* Taken from Core Web Programming Java 2 Edition * from Prentice Hall and Sun Microsystems Press, * http://www.corewebprogramming.com/. * 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() throws ServletException { ServletConfig config = getServletConfig(); 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 in an illegal format. } } 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" + "

" + title + "

"); for(int i=0; i" + message + "
"); } out.println(""); } }