Answer
Intern pool stores unique string instances for process lifetime.
Benefits: deduplication of literals. Harmful: unbounded memory use if interning user input.
Quick Answer
String interning stores one shared instance of each unique string literal in a process-wide pool. Two equal string literals share the same object in memory. This saves memory for repeated strings. The danger: interning user input or dynamic strings fills the pool permanently, causing memory growth that the GC cannot reclaim.
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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