Java Garbage Collectors

🔵 Automatic memory management system
🔵 Collects unused objects
🔵 Improves performance
🔵 Prevents memory leaks

🔵 Different types available
⏺ Serial: Simple, single-threaded collector.
⏺ Parallel: Multi-threaded for improved throughput.
⏺ Concurrent Mark Sweep (CMS): Low-latency, concurrent collector.
⏺ Garbage-First (G1): Optimized for large heaps.
⏺ Z Garbage Collector (ZGC): Scalable, low-latency collector.
⏺ Shenandoah: Low-pause time collector.
⏺ Epsilon: No-op garbage collector.
⏺ Mostly Concurrent (MCS): Concurrent collector with stop-the-world fallback.

Works by:
🔷 Tracing References: Identifies live objects by tracing references
🔷 Marking Phase: Marks live objects as reachable
🔷 Sweeping Phase: Frees memory for unreachable objects
🔷 Compacting Phase: Reorganizes memory to reduce fragmentation
🔷 Parallel Processing: Uses multiple threads for faster collection