What is a weak reference and when do I use one?

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What is a weak reference and when do I use one?

A WeakReference is a type of a reference object that allows you to determine when an object is being finalized. It allows you to keep a reference to the object without preventing it from being garbage-collected. They are used with caching and also provide an alternative to the cleanup typically done in Java finalization.

Main.java:

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Author of answer: Joris Van den Bogaert

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