Four parts of J2EE

The Platform Specification: Explains the application programming interfaces

that must be provided with all operating system versions of the J2EE platform.

It defines a consistent, yet flexible, approach to implementing J2EE so

that existing enterprise systems will be able to support it.

Reference Implementation: Sun Microsystems Inc.'s "sample application"

of the J2EE platform. The reference implementation is not a product but

is meant to validate the specification.

Technology Compatibility Kit: A test suite that helps ensure consistent

J2EE implementations. Product vendors receive the test suite and then tell

Sun whether they passed the test or not. If the answer is yes, Sun provides

them with a logo that indicates that the product is compatible with the

J2EE specification. Sun retains the right to audit any vendor's test results.

J2EE Blue Prints: Documentation and examples from Sun and its partners

that describe and illustrate "best practices" for developing and deploying

J2EE applications.

About the Author

Brian Robinson is a freelance writer based in Portland, Ore.

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