Web Reference: Aug 13, 2022 · Java Tutorial #58 - Java Weak HashMap Class with Examples (Map Data Structure)In this video by Programming for Beginners we will learn Java WeakHashMap Class... Mar 17, 2026 · WeakHashMap is a part of the java.util package that implements the Map interface. It stores key–value pairs like a HashMap but allows keys to be garbage-collected when they are no longer in ordinary use. This class provides the easiest way to harness the power of weak references. It is useful for implementing "registry-like" data structures, where the utility of an entry vanishes when its key is no longer reachable by any thread.
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