A computed value produced by a ClassValue instance should not strongly refer to that instance, for example:

class Holder {
  Object o;
  Holder(Object o) { this.o = o; }
}

class MyClassValue extends ClassValue<Holder> {
  Holder computerValue(Class<?> type) {
    return new Holder(this);
  }
}

In the current JDK implementation this will prevent classes from being garbage collected and therefore cause a memory link.

Rather than changing the implementation of ClassValue to support such an edge case it is preferred to update the documentation of ClassValue.computeValue warning against such behaviour.