Pretty much. Most of the breaks came from touching the likes of "sun.misc.Unsafe". Java versions 9->~17 added new jdk features (such as VarHandles) to allow f

Pretty much. Most of the breaks came from touching the likes of "sun.misc.Unsafe". Java versions 9->~17 added new jdk features (such as VarHandles) to allow for the safe interactions that sun.misc.Unsafe exposed. Libs had to update to use these new patterns with 9 being the worst hurdle. There was also a change to how packages could be named that messed with stuff. 2 jars putting stuff into stuff like `javax.annotations` was a big no-no that broke with 9.