Guest Book

import java.io.*; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; public class GuestBook extends HttpServlet { List messages; public void init() throws ServletException { messages = new ArrayList(); } public void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException { doGet( request, response ); } public void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException { response.setContentType( "text/html" ); PrintWriter out = response.getWriter(); out.print( "" ); out.println( "Guest Book" ); out.println( "" ); String m = request.getParameter("t"); if( m != null ) messages.add( m ); out.println( "" ); for( String msg : messages ) out.println( "" ); out.println( "

" + msg + "

" ); out.println( ""); out.println( "" ); out.println( "" ); } } // end of class GuestBook