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You wouldn't copyright the name of a book!
You wouldn't copyright the word Spiderman!
You wouldn't trademark an API... 
OMG! Don't. 🙊
Java 18 will be like,
"Introducing DRM into Java SE! 💥
Make any attempt at understanding how it works and Oracle will get you jailed for 5 years. Exciting times!"
@njoseph Java 8 was the last version of Java.
@njoseph remembering that oracle can sue you if you do benchmarks on Oracle database without they letting you
@njoseph to be honest, I'd take 5 years in jail over trying to understand Java in a heartbeat.