Now here is the code of simple build.xml file which compiles a java file present in src directory and places compiled class file in build / src directory.

<?xml version=”1.0"?>
<!— Build file for our first application —>
<project name=”Ant test project”
default=”build” basedir=”.”>
<target name=”build” >
<javac srcdir=”src” destdir=”build/src”
debug=”true” includes=”**/*.java” />
</target>
</project>

First line of the build.xml file represents the document type declaration. Next line is comment entry. Third line is the project tag. Each build file contains one project tag and all the instruction are written in the project tag. The project tag:

<action name=”HelloWorld” class=”net.javajazzup.Struts2HelloWorld”> <result>/pages/HelloWorld.jsp</result> </action>

requires three attributes namely name, default and basedir.
Here is the description of the attributes:

All the attributes are required. One project may contain one or more targets. In this example there is only one target. Which uses task javac to compile the java files.

<target name=”build” >
<javac srcdir=”src” destdir=”build/src”
debug=”true” includes=”**/*.java”/>
</target>

Here is the code of our test.java file, which is
to be compiled by the Ant utility.

class test{
public static void main (String args[]) {
System.out.println(“This is example 1”);
}}

Download the code of this article and unzip it in c:\. files will be unzipped in anttest directory. To run the Ant utility to compile the file go to c:\anttest\example1 and issue ant command. You will receive the following out put.

C:\anttest\example1>antBuildfile: build.xml
build:[javac] Compiling 1 source file to
C:\anttest\example1\build\src
BUILD SUCCESSFUL
Total time: 4 seconds
C:\anttest\example1>

Above-mentioned process compiles the file and places in the build \ src directory. Now let’s see how to build a web application and install it on the Jboss 3.2.3 application server.

After the completion of this article you will be able to include jsp, html and servlets in the ear file and deploy on the JBoss 3.2.3 application server. A complete example in this section will provide a strong foundation for the further development.

Let’s write one Hello World Servlet and a JSP file file to retrieve the Hello World Servlet. In order to deploy components we have to build .ear file which is the standard format for the deployment of JEE application. First of all let’s understand the structure of .ear and .war files.

Enterprise Archive Contents Enterprise Archive (.ear) component follows the standard directory structure defined in the JEE specification.

Directory Structure of .ear archive / .war and .jar files
META-INF
application.xml