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Challenges and Solutions in Enterprise Software Development with J2EE

Explore the complexities of enterprise software development, particularly in the realms of shipping, sales, inventory, customer support, and HR. This overview highlights challenges such as scalability, distributivity, and security, alongside the need for effective integration of legacy and multi-vendor systems. Delve into essential server-side design patterns like Model-View-Controller and multi-tier architectures, as well as J2EE technologies including JavaServer Pages and Enterprise Java Beans. Discover key roles in the deployment of enterprise applications and their implications for business success.

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Challenges and Solutions in Enterprise Software Development with J2EE

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  1. Enterprise Programming By J Pearce

  2. Enterprise Software Shipping Sales Inventory CustomerSupport HR

  3. Challenges • Scalability • Distributivity • Connectivity • Integrating legacy& multi-vendor systems • Common needs • Security • Transaction Processing

  4. E-Commerce • The ability to perform online transactions: • Selling • Trading • Negotiating

  5. E-Commerce Models • Storefronts • Auctions • Portals • Dynamic Pricing Models • Trading & Lending Models • B2B Exchanges & Services • Online News, Travel, Entertainment, Education

  6. 3 Important Server-Side Design Patterns • Model-View-Controller • Multi-Tier • Container-Component

  7. Model-View-Controller Architecture • Model: Managing data and logic • Controller: Executes user commands • View: Displays data • Principle: Application logic should independent of presentation logic.

  8. MVC (cont.)

  9. Multi-Tier Architectures • Single Tier (Mainframe) • Two Tier (Client-Server) • Three Tier (Application Servers) • Four Tier (Web-based) • N-Tier

  10. Single Tier

  11. Two Tier

  12. Three Tier

  13. Web-Based Four Tier

  14. Container-Component Architectures • Component: A semi-autonomous object known to clients only through the interfaces it implements and the conventions it conforms to. • Container: A program that provides an execution environment and lifecycle support for components.

  15. Containers & Components (cont.)

  16. Component Models • ActiveX, COM, DCOM • Applets • Servlets • Java Beans • Microsoft.NET • Enterprise Java Beans (EJB)

  17. J2XE Platform Specifications • J2SE: Client platform • J2ME: PDA platform • J2EE: Enterprise server platform

  18. J2EE APIs • DBase Connectivity (JDBC) • Naming & Directory Interface (JNDI) • Messaging Service (JMS) • Transaction Processing API (JTA) • Transaction Services (JTS) • JavaMail • Interface Definition Language (Java IDL)

  19. J2EE Technologies • Remote Method Invocation (RMI) • Servlets • Java Server Pages (JSP) • Enterprise java Beans (EJB) • Containers (Web, Applet, Enterprise)

  20. J2EE Deployment

  21. J2EE Roles • Application Client • Web Page Designer • Container Developer • Component Developer • Application Assembler • Application Deployer • Application Administrator

  22. References • Developing Enterprise Java Applications with J2EE and UML; Ahmed & Umrysh; A-W.

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