Answer
Weak references allow referencing an object without preventing GC from collecting it.
They are used in caching and memory-sensitive scenarios.
Quick Answer
A weak reference lets you reference an object without preventing the GC from collecting it. If memory is low, the GC can reclaim the object even though you hold a weak reference. Useful for caches where you want to keep data if possible but not force it to stay alive.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ