The sample jdk/demo/share/management/FullThreadDump is going to be removed.

That sample demonstrates the capability of performing
deadlock detection using the java.lang.management API .

There is no corresponding test in jdk/test/javax/management testing the same.

Some of the existing tests in jdk/test/javax/management do use the same API to check for the absence of deadlocks. However, there is no test that explicitly checks for the presence of a deadlock, as the sample does.

The sample, therefore, should be reworked into a test.