Core J2EE Component Technologies #Java Short Notes

Core J2EE Component Technologies

J2EE Application Components: Web Components, Business Components
Web-Component:
- Software entity hosted by a web-container on a J2EE Server
- Generate user interface for web-based applications
- Two Types: Servlets, JSPs
- Servlets: Process requests dynamically, format responses
- JSPs: How to process requests, and format responses
Business Components: EJB Components or enterprise beans: Contain business logic of an enterprise application. Three types: Session Beans, Entity Beans, Message Beans

J2EE Services

Distributed Communication Services:
- Distributed Communication Services provide J2EE components distributed communications capability and EIS access
- Web-container Service Components: JMS, JNDI, RMI-IIOP,CORBA and Java IDL
- Roughly: RMI-IIOP, CORBA and Java IDL: Applet and Application Container to Web-Container Communications
- JMS, JNDI: Between web-container and EJB container components. For application components not for users
- JNDI: Naming and directory services.
- CORBA: Objects to communicate regardless of their implementation language or the operating system
- Java IDL API enables J2EE applications to utilize CORBA functionality
Other support technologies
- JDBC, Java Transaction API, Java Transaction Service, J2EE Connectors, JavaMail
- JDBC: Provides database access from Java.
- Latest JDBC: Provides connection pooling and distributed transaction support for the J2EE platform
- JDBC Drivers: Java, Partial Java, Java Native Interface (JNI)
- J2EE connector architecture provides supports to connect to EISs
- JavaMail API to handle mailing

From: http://sitestree.com/?p=4982
Categories:Java Short Notes
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Post Data:2012-10-30 12:18:39

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