Java / JDK, JRE, JVM, JIT
Explain G1 Garbage Collector in Java.
G1 garbage collector is used for large heap memory areas. It separates the heap memory into regions and does collection within them in parallel. G1 also does compacts the free heap space on the go just after reclaiming the memory. But CMS garbage collector compacts the memory on stop the world (STW) situations. G1 collector prioritizes the region based on most garbage first.
Turn on the -XX:+UseG1GC JVM argument to use the G1 garbage collector.
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