Differnce between heap and stack in java

Question

Accepted Answer

Heap is used for dynamic memory allocation, while stack is used for static memory allocation in Java.

Heap memory is used for storing objects and is managed by the JVM.
Stack memory is used for storing method calls and local variables.
Heap memory is larger in size compared to stack memory.
Objects created in heap memory can be accessed globally, while variables in stack memory are only accessible within the method they are declared in.

Accepted Answer

In Java, the stack is used for static memory allocation, storing primitive data types and references within the scope of method calls, making access fast and automatic. The heap, on the other hand, is used for dynamic memory allocation, storing objects with a longer lifespan managed by the garbage collector, which results in slower access due to the overhead of dynamic allocation and garbage collection.

Differnce between heap and stack in java

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