1. What is architecture of JVM? How does memory management do in JVM? what are various segment of Heap memory like Eden, survival and old memory?

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Accepted Answer

JVM architecture includes class loader, bytecode verifier, interpreter, JIT compiler, and runtime data areas. Memory management is done through garbage collection.

JVM has class loader to load class files and bytecode verifier to check the code for security and correctness.
Interpreter executes the bytecode and JIT compiler optimizes the code for better performance.
Runtime data areas include method area, heap, stack, and PC registers.
Memory management is done through garbage collection which frees up memory by removing unused objects.
Heap memory is divided into Eden space, survivor space, and old generation space based on the age of objects.
Young objects are initially allocated in Eden space and then moved to survivor space. Old objects are allocated in old generation space.

1. What is architecture of JVM? How does memory management do in JVM? what are various segment of Heap memory like Eden, survival and old memory?

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