Hidden Classes

Advanced JavaTopic 2 of 62 questions

Q1`ClassOption.WEAK` vs `STRONG` for hidden-class GC, and what `NESTMATE` enables

STRONG keeps a hidden class alive as long as its loader lives, the default lets it unload when unreachable, and NESTMATE grants shared private-member access between the hidden class and its host.

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Q2Hidden classes vs dynamically generated `Proxy` classes, and their behaviour under JPMS module restrictions

A `Proxy` is a named, registered, interface-based class in a dynamic module; a hidden class is nameless, unregistered, unloadable, and lives in its lookup class's own module.

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