Can you list the different types of memory used in Java and their main purposes?

Java uses several types of memory, each responsible for storing different data during program execution:

• Heap — the main place for storing objects and arrays. Managed by the garbage collector. All objects are created in the heap.

• Stack — stores call frames, local variables, and method parameters. Each thread has its own stack.

• Method Area — stores class information, static variables, constants, and bytecode of methods.

• PC Register — stores the address of the current instruction being executed for each thread.

• Native Method Stack — used for calling native (non-Java) methods.

Example: when a method is called, a frame is created on the stack, which stores local variables and parameters. Objects created within the method are placed in the heap.