A hashtag, or #, style comment is used within catalina.bat, at line 218. ... # Configure JAVA 9 specific start-up parameters set "JDK_JAVA_OPTIONS=%JDK_JAVA_OPTIONS% --add-opens=java.base/java.lang=ALL-UNNAMED" set "JDK_JAVA_OPTIONS=%JDK_JAVA_OPTIONS% --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED" ...
Thanks for reporting this. Fixed with r1805095. Will be part of M27. No backport needed.
*** Bug 61526 has been marked as a duplicate of this bug. ***
*** Bug 61570 has been marked as a duplicate of this bug. ***