A DESCRIPTION OF THE PROBLEM :
The 'java' man page, in src/java.base/share/man/java.1 currently states that

   [...] the XEND instruction to check if a set of instructions are being run in a transaction.

see https://github.com/AdoptOpenJDK/openjdk-jdk/blob/895041ac7231c89554b6096e44eabebd557c3374/src/java.base/share/man/java.1#L2859-L2860

However XEND is *not* use to check if a transaction is currently executed, instead XTEST is. Simply s/XEND/XTEST/ in this sentence fixes the issue.