Open Source–Then and Now: A Conversation With Ray Gans of the OpenJDK Community Program

“Tell us about your history at Sun working on Java compatibility
issues.

“In 1997, Sun hired me to work on the 100% Pure Java program,
which allowed application developers to verify that their
applications used no proprietary APIs and were written to be as
portable as possible between Java runtimes from different vendors.
From there, I moved to the compatibility testing groups that work
on Technology Compatibility Kits (TCKs), comprised of compatibility
requirements and test suites. TCKs are used to verify that an
implementation of Java technology actually meets the
specification…”

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