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Simplifying Interfaces

Another benefit of reusable components is that they let you work at a higher level of abstraction than would be possible by working directly with HTML code or with WebObjects' dynamic elements. You (or someone else) can create a component that encapsulates a solution to a possibly complicated programming problem, and then reuse that solution again and again without having to be concerned with the details of its implementation. Examples of this kind of component include:

• A menu that posts different actions depending on the user's choice.
  

• A calendar that lets a user input start and end dates.
  

• A table view that displays records returned by a database query.
  

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