Friday 18 April 2014

How to print Hello World in servlet

Let us start Servlet first programm,

First of all,

STEP 1:   Create folder in webapps which is exising in Apache Tomcat folder
             
                Folder name as Hello

STEP 2:   Now in Hello folder you have to create index.html file and code as Below


                 <html>
                 <head>
                 <title>Wel come</title>
                 </head>

               <body >
                              <a href="Hello">Click here</a>


               </body>
                </html>
         
             I hope you have created it.

STEP 3: After that create new folder in Hello foder which name is WEB-INF

STEP 4: Now create one file which name is web.xml and make sure it's extenstion is .xml and coded
              with below code
          
             <web-app>
                 <servlet>
                               <servlet-name>Hello</servlet-name>
                               <servlet-class>Hello</servlet-class>
                </servlet>
            
                <servlet-mapping>
                              <servlet-name>Hello</servlet-name>
                              <url-pattern>/Hello</url-pattern>
               </servlet-mapping>

             </web-app>

            this file used to mapping between servlet to your servlet file
  
STEP 5: Now create one folder in WEB-INF foder which name is classes

STEP 6: In classes folder create your servlet file which name is Hello.java
              complie it
              as per below code
           
               import java.io.*;
               import javax.servlet.*;
               import javax.servlet.http.*;

               public class Hello extends HttpServlet {

                                public void doGet(HttpServletRequest request, HttpServletResponse response)
                                                                                            throws IOException, ServletException
                                {
                                         response.setContentType("text/html");
                                         PrintWriter out = response.getWriter();
                                          out.println("<html><body>Hello World!</body></html>");
                                }
                                }

STEP 7:After complation of your programm yu have to open Apche server in
              browser
      
             like ,
                    http://localhost:8080/

            click on manager apps
             and then clcik on list of Application
            After that you found your example name as Hello
           Click on Hello link

     

Enjoy........   

DOWNLOAD EXAMPLE


Downlod files and Extract in webapps folder
         
 

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