Answer
String immutability enables thread safety, prevents accidental mutation, and supports optimizations like interning.
Quick Answer
Because strings are immutable, they are inherently thread-safe — no locks needed when reading across threads. The runtime can also intern string literals (reuse the same object for equal strings) to save memory. The downside: every modification creates a new string, so use StringBuilder for heavy concatenation.
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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