1 / 14

Seminarium on Component-based Software Engineering

Seminarium on Component-based Software Engineering. JavaBeans. David Snuijf. Java. Released in alpha-form in 1995 by Sun Originality: concepts of applets Java became common used by 1996. Java – components. Java component models: Applet JavaBeans Enterprise JavaBeans Servlets

mstrong
Download Presentation

Seminarium on Component-based Software Engineering

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Seminarium onComponent-based Software Engineering JavaBeans David Snuijf

  2. Java • Released in alpha-form in 1995 by Sun • Originality: concepts of applets • Java became common used by 1996 Seminarium CBSE

  3. Java – components • Java component models: • Applet • JavaBeans • Enterprise JavaBeans • Servlets • Application client components J2SE J2EE J2SE: Java 2 platform, Standard EditionJ2EE: Java 2 platform, Enterprise Edition Seminarium CBSE

  4. Let’s get into avaBeans J Seminarium CBSE

  5. JavaBeans – solution to.. • Enables software developers to design and create reusable pieces of software that easily integrate • with each other • with applications • with development tools Seminarium CBSE

  6. JavaBeans – Main aspects • Events • Properties • Introspection • Customization • Persistence Seminarium CBSE

  7. JavaBeans • Approach to composition: • Connection-oriented programming / wiring • Beans define: • Event sources • Event listeners • By connecting one bean instance’s listener to another bean instance’s event source, events flow • container structures • InfoBus Seminarium CBSE

  8. Let’s get into nterprise JavaBeans E Seminarium CBSE

  9. Enterprise JavaBeans (EJB) • Provide a framework for components that may be "plugged in" to a server • Enterprise JavaBeans is totally different of JavaBeans, except that it uses some similar concepts Seminarium CBSE

  10. Enterprise JavaBeans – Goals • Easy for developers to create applications • Standard way for client/server applications • Compatible with and uses other Java APIs • EJB can interoperate with non-Java apps • EJB is compatible with CORBA Seminarium CBSE

  11. Client EJB Server EJB Container Home EJB Homestub Home EJB Home Remoteor local EJB Objectstub Remoteor local EJB Object EJB Bean Enterprise JavaBean component Seminarium CBSE

  12. Kind of Enterprise JavaBeans Four kind of EJB beans • Stateless session • Stateful session • Entity • Message-driven Seminarium CBSE

  13. Questions? ? Seminarium CBSE

  14. Seminarium CBSE

More Related