Stack & amp; Heap in Java

Stack: The size and lifecycle of data stored in the Stack are determined, and the data in the Stack can be shared.
Heap: the memory size can be dynamically allocated without prior notice to the compiler lifecycle. The data in the Heap is also recycled from time to time by the Java garbage collector.

Integer a = new Integer (10 );
The new statement indicates that the data after the compiler needs to be dynamically created during runtime, so the data is stored in the heap.
Create an Interger object reference variable a in the stack

All Java objects are stored in Heap.

Features of Heap:
1) Heap is a general-purpose pool of memory (in the RAM area) where all Java objects live

2) Unlike the stack, the compiler doesn't need to know how long that storage must stay on the heap

The last reference is as follows: