Working With J2EE: Creating hello world application

To run this tutorial, as a minimum you will be required to have installed the following prerequisite software:

Sun JDK 6.0+ (J2SE 1.6)
Eclipse IDE for Java EE Developers, which is platform specific
Apache Geronimo Eclipse Plugin 2.1.x
Apache Geronimo Server 2.1.x

Details on installing eclipse are provided in the Development environment section.

Creating a dynamic Web project using Eclipse
Adding a JSP to the project
Making hellp.jsp the welcome file
Run and deploy

Creating a dynamic Web project using Eclipse

Launch Eclipse and Switch to Java EE perspective.
Right click under the project explorer and select Dynamic Web Project as shown in the figure
Name the project as HelloWorld.
Keep default values for all the fields and select Finish.

Adding a JSP to the project

Right-click on the project HelloWorld and create a new JSP as shown in the figure.
Give the name as hello.jsp and select Next. Select Finish on the next screen

Modify the code of hello.jsp as follows:

hello.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

    pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<title>Hello World</title>

</head>

<body>

Hello World!!

</body>

</html>

Making hellp.jsp the welcome file

Click WebContent -> WEB-INF and open web.xml.

Add hello.jsp as a welcome file under the <welcome-file-list> tag:

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xmlns="http://java.sun.com/xml/ns/javaee"

         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

   <display-name>HellowWorld</display-name>

   <welcome-file-list>

    <welcome-file>hello.jsp</welcome-file>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

</welcome-file-list>

</web-app>

Run and deploy

Deploy the application on the server.
launch the application using http://localhost:8080/HelloWorld/hello.jsp
This will display HelloWorld!! on the browser window.

Working With J2EE

Monday, December 3, 2018

Creating hello world application

Creating a dynamic Web project using Eclipse

Adding a JSP to the project

Making hellp.jsp the welcome file

Run and deploy

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