The Java Heap Analysis Tool (jhat) TechNotes/man page lists four methods for generating a heap dump that can be analyzed by jhat.

You can fix your Java memory leak problem without a costly JVM heap dump. Just use Java Flight Recorder's Old Object Sample event and view the recording in JDK Mission Control.

By extending Java’s compiler control mechanism to mark certain methods as hot so they could compile into the hot code heap, the proposal would separate code that is known to be hot, decrease ...