Application Server

An application server is an application program that accepts connections in order to service requests, by sending back responses.

Application Server

Application Server

     

An application server is an application program that accepts connections in order to service requests, by sending back responses. An application server   can run remotely (connected to client through a computer network) or can exist on the same computer where the client application is running. Examples include file server, database server, backup server, print server, mail server, web server, FTP server, application server, VPN server, DHCP server, DNS server, WINS server, logon server, security server, domain controller, backup domain controller, proxy server, firewall, etc.

Application server are developed to support the quick development of the enterprise applications. They provide security and state maintenance with the data base and persistence.

An application server may be a part of  a three tier architecture model. A three tier architecture includes the Client Tier, Middle Tier and the EIS (Enterprise Information System) Tier. It may consists of Presentation Tier (as the GUI interface), Middle Tier as the collection of business logic application and the EIS (Enterprise Information System). The view tier is nothing but the web based graphical user interface to interact with the clients, Middle tier is the combination of web containers and the EJB containers. EIS contains persistence and the database management systems to support the applications. JEE  Platform requires database to store the business data. This database is accessible by means of JDBC, JDO or the SQLJ APIs. We can also access the database through enterprise beans, web components and the application client components. 

Tutorials

  1. Send Email From JSP & Servlet
  2. Building a Simple EJB Application Tutorial
  3. DEVELOPING & DEPLOYING A PACKAGED EJB
  4. Java EJB 3.0 Tutorials
  5. Features of EJB 3.0
  6. Annotations
  7. Java Persistence API
  8. Message Driven Beans
  9. Web Services - Web Services Tutorials
  10. J2EE Tutorial - Introduction
  11. Java Persistence Example
  12. J2EE Tutorial - Session Tracking
  13. J2EE Tutorial - Running RMI Example
  14. J2EE Tutorial - Session Tracking Example
  15. A Message-Driven Bean Example
  16. J2EE Tutorial - RMI Example
  17. EJB remote interface
  18. Ejb message driven bean
  19. EJB lookup example
  20. EJB life cycle method
  21. EJB Interfaces
  22. EJB Insert data
  23. EJB deployment descriptor
  24. EJB create method
  25. EJB container services
  26. EJB Hello world example
  27. EJB directory structure
  28. Deleting a Row from SQL Table Using EJB
  29. Accessing Database using EJB
  30. Enterprise Beans
  31. Application Server
  32. Session Beans
  33. J2EE Tutorial - Java Bean
  34. Stateful Session Bean Example
  35. EJB Container or EJB Server
  36. EJB 3.0 Tutorials
  37. Stateless Session Bean Example
  38. Introduction to POJO (Plain Old Java Object) Programming Model
  39. Spring Batch Example
  40. init Method in Spring