Stack memory is used for method execution and local variable storage in Java.Each method call creates a new stack frame, which is removed when the method completes.Heap memory is used to store objects created at runtime in Java.Unlike stack memory, heap memory requires garbage collection to manage unused objects.Objects in the heap stay in memory until they are no longer referenced.Stack memory is fast and predictable due to its structured Last In, First Out (LIFO) approach.Heap memory allows for dynamic memory allocation but requires additional processing for management.Garbage Collection in Java automatically removes unused objects from heap memory.Frequent object creation and deletion in heap memory can lead to Garbage Collection overhead.Efficient memory management is crucial for optimizing Java program performance.