Quick Answer
Java GC algorithms: Serial (single-threaded, for small heaps), Parallel/Throughput (multi-threaded GC, good for batch processing), CMS (Concurrent Mark Sweep - deprecated, low pause), G1 (default since Java 9 - region-based, balances throughput and latency), ZGC (Java 11+ - sub-millisecond pauses for huge heaps), Shenandoah (similar to ZGC). Choose based on your latency vs throughput requirements.
Answer
Mark-and-Sweep marks live objects and removes unused ones. Generational GC optimizes by separating objects into young and old generations. Stop-the-world pauses occur during GC phases. Modern collectors like G1 and ZGC reduce latency.
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SugharaIQ Editorial Team
Verified Answer
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