The implementation in java.util.jar.JarFile, when initializing a JarVerifier uses the jdk.internal.misc.ThreadTracker to keep track of and prevent re-entrancy.

ThreadTracker was a temporary mechanism. ScopedValue has been delivered as a permanent Java SE feature in Java 25 (JDK-8352695).

Re-entrancy can be tracked using a ScopedValue. The JarFile implementation should move away from ThreadTracker and instead use ScopedValue in its place.