The document discusses the use of Java platform and NetBeans IDE 6.7 for developing enterprise and web applications, including the architecture, and technologies involved. It provides an overview of Java SE, EE, ME, and the capabilities offered for building multi-tier applications using components such as servlets, JSP, and EJBs. Additionally, it highlights the types of web applications and the significance of enterprise beans in scalable, distributed applications.

1. Платформа Java и
IDE Netbeans 6.7 для
разработки
Enterprise (корпоративных)
и Web приложений
• Андрей Родионов
• Community manager
• Sun Microsystems

2. Перечень тем
• Двух- и трех– уровневая архитектура приложений
• Обзор Java платформы: Java SE, Java EE, Java ME
• IDE NetBeans как среда разработки разных типов
приложений
• Возможности Java EE для построения трех(много)-
уровневых приложений
• Glassfish Application Server - обзор, демонстрация работы
• Технологии для разработки Web-уровня
• Технологии для разработки бизнес-уровня
• Практика
> Web service
> Java persistence
> EJB

3. «Drinkens, Who is this?»

4. 3 Million People a Week Join the
Network!

5. Java SE, Java EE, Java ME

6. Java SE, Java EE, Java ME

7. NetBeans IDE 6.7 Features
• Java SE (Java Standard Edition)
• Web and Java EE (Java Enterprise Edition)
> Web Applications
> Java EE Applications
> Web Services
• Mobility (Java Micro Edition)
• Ruby, JRuby, Ruby on Rails
• C and C++
• UML
• SOA, XSLT Designer, WSDL and XML
• JavaFX
• Project Kanai

8. Двух- и трех– уровневая архитектура
приложений
• Возможность использования
различных языков
программирования для различных
компонентов
• Централизация компонентов
• Балансировка нагрузки
• Более эффективный доступ к
данным
• Улучшенная защита
• Более простой доступ к внешним
ресурсам

9. Java SE, Java EE, Java ME

10. Java Stadard Edition

11. Java Enterprise Edition
• Построена на Java Standard Edition (Java SE)
• Web Application Technologies
• Web Services Technologies
• Enterprise Application Technologies
• Management and Security Technologies
• Sun Java System Application Server (Glassfish)

12. Java EE для построения трех(много)-
уровневых приложений

13. Java EE Components
• Application clients and applets are components that
run on the client
• Java Servlet, JavaServer Faces, and JavaServer
Pages (JSP) technology components are web
components that run on the server
• Enterprise JavaBeans (EJB) components
(enterprise beans) are business components that
run on the server

14. Java EE Clients
• Web Clients
> dynamic web pages containing various types of
markup language (HTML, XML, and so on), which are
generated by web components running in the web tier
> web browser, which renders the pages received from
the server
• Applets
• Application Clients
• The JavaBeans Component Architecture

15. Java EE Server Communications

16. Web Components
• Java Servlet technology
• Java Server Pages (JSP)
• Java Server Faces (JSF)

17. Business Components &
Enterprise Information SystemTier

18. Архитектура API Java EE

19. Java EE 5 APIs
• Java ServletTechnology • Java Architecture for XML
Binding (JAXB)
• JavaServer PagesTechnology
• SOAP with Attachments API
• JavaServer Pages for Java
StandardTag Library
• Java API for XML Registries
• JavaServer Faces
• J2EE Connector
• Java Message Service API Architecture
• JavaTransaction API • Java Database Connectivity
• JavaMail API API
• JavaBeans Activation • Java Persistence API
Framework • Java Naming and Directory
• Java API for XML Processing Interface
• Java API for XMLWeb • Java Authentication and
Services (JAX-WS) Authorization Service

20. Типы Web-приложений
• Presentation-oriented
> A presentation-oriented web application generates
interactive web pages containing various types of
markup language (HTML, XML, and so on) and
dynamic content in response to requests.
• Service-oriented
> A service-oriented web application implements the
endpoint of a web service. Presentation-oriented
applications are often clients of service-oriented web
applications

22. Технологии для разработки Web-
уровня
• Java Servlet technology
• Java Server Pages (JSP)
• Java Server Faces

23. Java Servlet technology
• A servlet is a Java programming language class

24. Java Server Pages (JSP)
• JavaServer Pages (JSP) technology allows you to easily create web
content that has both static and dynamic components
• A JSP page is a text document that contains two types of text: static
data, which can be expressed in any text-based format (such as
HTML, SVG,WML, and XML), and JSP elements, which construct
dynamic content

26. Java Server Faces
• JavaServer Faces technology is a server-side user
interface component framework for Java
technology-based web applications

27. Технологии для разработки бизнес-
уровня
• Web Services
• Enterprise JavaBeans (EJB)
> Session Bean (Stateful, Stateless)
> Message-Driven Beans
• Java Persistence

28. Web Services
• Дает возможность удаленного вызова функций по
протоколу HTTP
• Клиент и сервер могут базироваться на разных
программных платформах
• Стандарт передачи данных SOAP (формат XML)

32. Enterprise JavaBeans (EJB)
• Written in the Java programming language, an
enterprise bean is a server-side component that
encapsulates the business logic of an application.
The business logic is the code that fulfills the purpose
of the application.
• Enterprise beans simplify the development of large,
distributed applications
• Enterprise beans are portable components, the
application assembler can build new applications
from existing beans

33. When to Use Enterprise Beans?
• The application must be scalable. To accommodate
a growing number of users, you may need to
distribute an application’s components across
multiple machines.
• Transactions must ensure data integrity. Enterprise
beans support transactions, the mechanisms that
manage the concurrent access of shared objects.
• The application will have a variety of clients. With
only a few lines of code, remote clients can easily
locate enterprise beans. These clients can be thin,
various, and numerous.

34. Types of Enterprise Beans
Session Bean - a session bean represents a single
client inside the Application Server. To access an
application that is deployed on the server, the client
invokes the session bean’s methods
> Stateful
> Stateless
• Message-Driven Beans - a message-driven bean is
an enterprise bean that allows Java EE
applications to process messages asynchronously.
It normally acts as a JMS message listener, which
is similar to an event listener except that it receives
JMS messages instead of events.

35. Stateful session bean
• The bean’s state represents the interaction
between the bean and a specific client.
• The bean needs to hold information about the client
across method invocations.
• The bean mediates between the client and the
other components of the application, presenting a
simplified view to the client.
• Behind the scenes, the bean manages the work
flow of several enterprise beans.

36. Stateless session bean
• The bean’s state has no data for a specific client.
• In a single method invocation, the bean performs a
generic task for all clients. For example, you might
use a stateless session bean to send an email that
confirms an online order.
• A stateless session bean can implement a web
service, but other types of enterprise beans cannot.

37. Message-Driven Beans
Session beans allow you to send JMS messages and to
receive them synchronously, but not asynchronously.
To avoid tying up server resources, do not to use
blocking synchronous receives in a server-side
component, and in general JMS messages should not
be sent or received synchronously. To receive
messages asynchronously, use a message-driven
bean.

38. СПАСИБО!
Andrii.Rodionov@sun.com
http://blogs.sun.com/ntuu
http://osug.org.ua/