|
Software's that you Need
|
1. J2EE1.3.1 - j2sdkee-1_3_1-win.exe
2. J2SDK1.3.1 - j2sdk-1_3_1_09-windows-i586.exe
3. Oracle 9i Client Setup
4. Macromedia HomeSite Editor[Optional]
|
|
J2EE Server
|
The J2EE server provides the following services:
1) Naming and Directory - allows programs to locate services and components through the Java Naming and Directory Interface (JNDI)
2) Authentication - enforces security by requiring users to log in
3) HTTP - enables Web browsers to access servlets and JavaServer Pages (JSP) files
4) EJB - allows clients to invoke methods on enterprise beans
|
|
EJB Container
|
Enterprise bean instances run within anEJB container. The container is a runtime environment that controls
the enterprise beans and provides them with important system-level services
1) Transaction Management
2) Security
3) Remote Client Connectivity
4) Life Cycle Management
5) Database Connection Pooling
|
|
Web Container
|
The Web container is a runtime environment for JSP files and and servlets.
Although these Web components are an important part of a J2EE application
|
|
Contents of a J2EE Application
|
A J2EE application may contain one or more enterprise beans, Web components,
or J2EE application client components. An enterprise bean is composed of three
class files-- the EJB class, the remote interface, and the home interface.
A Web component may contain files of the following types: servlet class, JSP, HTML,
and GIF. A J2EE application client is a Java application that runs in an environment
(container) which allows it to access J2EE services
| J2EE Application | .ear |
| J2EE Application Deployment Descriptor | .xml |
| Enterprise Bean ejb | .jar |
| EJB Deployment Descriptor | .xml |
| EJB Class | .class |
| Remote Interface | .class |
| Home Interface | .class |
| Web Component | .war |
| Web Component Deployment Descriptor | .xml |
| JSP File | .jsp |
| Servlet Class | .class |
| GIF File | .gif |
| HTML File | .html |
| J2EE Application Client | .jar |
| J2EE Application Client Deployment Descriptor | .xml |
| Java Application | .class |
|
|
People and Roles : 1) Person: Software Developer
|
Enterprise Bean Creation
1) Codes and compiles the Java source code needed by the enterprise bean
2) Specifies the deployment descriptor for the enterprise bean
3) Bundles the .class files and deployment descriptor into an EJB .jar file
J2EE Application Client Creation
1) Codes and compiles the Java source code needed by the client
2) Specifies the deployment descriptor for the client
3) Bundles the .class files and deployment descriptor into the .jar file for the client.
J2EE Application Assembly
1) Assembles enterprise beans (EJB .jar) and Web components (.war) created in the
previous phases into a J2EE application (.ear)
2) Specifies the deployment descriptor for the J2EE application
|
|
People and Roles : 2) Person: System Administrator
|
J2EE Application Deployment
1) Adds the J2EE application (.ear) created in the preceding phase to the J2EE server
2) Configures the J2EE application for the operational environment by modifying the deployment
descriptor of the J2EE application
3) Deploys (installs) the J2EE application (.ear) into the J2EE server
|
NEXT >> Coding the Enterprise Bean
|
|
My Dream to be your Friend and Create a Group of Intelligent and Understanding Programmers
|
 If you like this article and/or code mailme or Join our small Java User Group which is by the Programmers for the Programmers ,
Till we meet next time BYE  Kind Regards - James Smith
|
|
Java, J2EE, J2SE and all Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc.
in the United States and other countries. 
|
