nah it was a processor whose native instruction set was java bytecode. it garbage collected natively, and all the other stuff. It was not Jazelle, nor was it an ARM CPU which interpreted bytecode and ran it.
I think it was the "aJile" processor listed in your final link, but I'm not 100% sure. It was over 20 years ago that I read about it and was about to buy a development kit when I got pulled off of all java work I was doing.
Could it be some older ARM core supporting Jazelle?
> https://en.wikipedia.org/wiki/Jazelle
concretely possibly a ARM926EJ-S?
> https://en.wikipedia.org/wiki/ARM9#ARM9E-S_and_ARM9EJ-S
Various other "Java processors" are listed on
> https://en.wikipedia.org/wiki/Java_processor