servlets: Creating a servlet program

· Creating a servlet program

Prerequisite:

1. Download any server (Ex: Tomcat, Weblogic,..)

2. Download the jar files and configure

servlet-api.jar

3. JDK 7

4. Eclipse IDE for Java EE Developers (Juno 4.2)

5. import javax.servlet and javax.servlet.http packages

Table of Content:

1. Create Dynamic Web Project

2. Create Servlet class

3. Deploy the servlet

4. Run and test the servlet

· Servlet is a java class, which resides in Tomcat(server), and tomcat is a server

Right click on our project i.e: simpleservletproject->new->servlet

· Or if you unable to find servlet option, then choose other..and we can find servlet option in Web

· Click on next button

· Here give the java package: Example: org.rajendra.improvejava, and class name is SimpleServlet(you can give any class name)

Here super class is HttpServlet, and click on Next button

· Here I can enter the name of the servlet, it’s taken the default as the class name, and give the description name example: a simple servlet program

· url mapping that is class name , click on Edit option

· Click on Ok button
Now click on Next button

· Enable or disable the necessary methods, in this prog we don’t want contructor, doPost()

· Click on finish button

· Write any statements in doGet() method

· Now go to our package , and our program as per the below figure

· Right click->run as->choose Run on Server

If you didn’t save it will ask you, click on Yes

It deploys inside the server

· Click on Finish button

· If you want you can use printwiter class to display in the webpage also
Write the PrinterWriter class reference and print the

import java.io.PrintWriter;

servlets