open-ended meta issue for JDK compatibility problems of the netbeans codebase

see sub-issues for details

easy way to get a list of for-removal deprecated calls is to start NB with JFR enabled (put into conf so that userdir can be resolved):

-J-XX:StartFlightRecording:filename=${netbeans_default_userdir}/var/nb.jfr,settings=default.jfc,dumponexit=true

then list with:

jfr print --events jdk.DeprecatedInvocation nb.jfr

(or open in tools like VisualVM, Mission Control etc)

unfortunately the stored stack is limited to displaying only the first non-jdk frame https://bugs.openjdk.org/browse/JDK-8211238

The event will have a stack trace but will be truncated to the immediate caller. Take note JMC, as the existing heuristics about reporting truncated stack traces will need to be updated.

which can make finding the usage a bit more difficult

The most obvious method would have been to grep the build log with

ant -Djavac.add.compilerargs="-Xmaxwarns 10000 -Xlint:deprecation -Xlint:removal"

which is possible since #8796, but for that we have too many modules still which haven't been moved to the javac release flag yet (#8813).