# jdeps --jdk-internals on the class from lanes/src/UnsafeWarning.java (JDK 25's jdeps) $ jdeps --jdk-internals --multi-release 25 UnsafeWarning.class UnsafeWarning.class -> jdk.unsupported UnsafeWarning -> sun.misc.Unsafe JDK internal API (jdk.unsupported) Warning: JDK internal APIs are unsupported and private to JDK implementation that are subject to be removed or changed incompatibly and could break your application. Please modify your code to eliminate dependence on any JDK internal APIs. For the most recent update on JDK internal API replacements, please check: https://wiki.openjdk.org/display/JDK8/Java+Dependency+Analysis+Tool JDK Internal API Suggested Replacement ---------------- --------------------- sun.misc.Unsafe See https://openjdk.org/jeps/260