Had to look it up.<p>TCK == Technology Compatibility Kit
(<a href="https://en.m.wikipedia.org/wiki/Technology_Compatibility_Kit" rel="nofollow">https://en.m.wikipedia.org/wiki/Technology_Compatibility_Kit</a>)<p>Which leads me to believe CTS is compatibility test suite.
Honest question since I’m not knowledgeable about this. Is this even something anyone cares about, considering how Oracle has treated Java and its other inheritances from Sun? If yes, how?