how an object looks like in memory applies to an array.

class A {
    int x;
    int y;
}
 
...
 
public void m1() {
    int i = 0;
    m2();
}
 
public void m2() {
    A a = new A();
}
 
...

With the above declaration, let's invoke m1() and see what happens:

1. When m1 is invoked, a new frame (Frame-1) is pushed into the stack, and local variable i is also created in Frame-1.
2. Then m2 is invoked inside of m1, another new frame (Frame-2) is pushed into the stack. In m2, an object of class A is created in the heap and reference variable is put in Frame-2. Now, at this point, the stack and heap looks like the following: