GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 2.24.33,
cairo version 1.16.0) of 2022-07-18

Java has supported multiline string blocks delimited by triple quotes
("""..."""), like e.g. in Python, since version 13, September 2019. Emacs'
Java mode still doesn't highlight this properly.

Paul