What Is a Framework?

When confronted with a set of low-level APIs, such as the J2EE APIs, programmers naturally start to develop common patterns and convenience methods for dealing with requirements that come up again and again. After a while, most developers will build up their own personal toolkit of handy code and techniques that they can reuse whenever they encounter a familiar use case. Sometimes, problems are so common across the industry that formal recipes or design patterns are recognized for dealing with the scenario.

TIPAs we mentioned in Chapter 1, BluePrints forms an important part of the J2EE platform. An extensive catalog of these design patterns and related information for J2EE can be found on the Sun BluePrints site (java.sun.com/blueprints/). ...

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