Can you list the existing types of garbage collectors in JVM?

There are several types of garbage collectors in JVM, each optimized for different scenarios and performance requirements:

• Serial Garbage Collector — a simple single-threaded collector suitable for small applications.
• Parallel Garbage Collector (Throughput Collector) — a multi-threaded collector focused on maximum throughput.
• CMS (Concurrent Mark Sweep) Collector — minimizes pauses by working concurrently with the application, suitable for low-latency applications.
• G1 (Garbage First) Collector — a modern collector that divides the heap into regions and aims to minimize pauses, well-suited for large heaps.
• ZGC (Z Garbage Collector) — a low-latency collector with minimal pauses, supports very large heaps.
• Shenandoah — similar to ZGC, also aimed at minimal pauses.

The choice of collector depends on latency requirements, throughput, and heap size.