Basic HTML version of Foils prepared July 14 97

Foil 51 Components: JavaBeans, ActiveX

From Web Technology as the basis of Portable High Quality HPCN Software Review Meeting of PSPTA Group Manchester UK, Garland Texas(E-systems), Winnipeg Canada(HPCS'97) -- July 1,9,12 97. by Geoffrey C. Fox


JavaBeans are Java objects with well defined methodology for providing hooks that enable design or even runtime composition.
Beans connectivity is implemented in terms of events, posted by the source beans and selectively delivered to the destination beans that expressed interest in specific event types.
Interests are expressed, either programmatically or dynamically in the design- or runtime, in terms of specialized objects - event listeners - that are created by (human or machine) bean connector and then specialized and registered with the destination beans.
Bean design patterns for naming accessor methods and other control elements provide a uniform support for dynamic bean manipulation both by programmers and by authoring tools (beanboxes).
At the moment, the most popular component technology at the PC desktop level comes from Microsoft in terms of OLE/ActiveX controls but the much more powerful and modern JavaBeans technology gains rapid acceptance by the software industry.



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