Show the state of the stack and the heap at time moment 3. Specifically, show th

Question

Show the state of the stack and the heap at time moment 3.

Specifically, show the activation records that are on the stack, in the order in which they appear. Show clearly (1) each activation record and the method it corresponds to; (2) the local variables and formal parameters in each of these records; (3) the values stored in the variables and parameters on the stack (show “?” for uninitialized variables). For the state of the heap, show all run-time objects that are alive at moment 2, together with the values of their fields. If a stack/heap location has a reference value, describe clearly which entity is being referenced.

*Note: This is not a coding question, rather a question that traces code. Please do not answer with a program/code. Use the information provided below to retrieve the answer:

Consider the following Java code: abstract class A private A h; public A(Ax)( this.h-x; if (x != null) x.set(this); } // constructor public A gereturn this.h; public void set (A y) { this. h = y; time moment 1.5 public abstract A p) public static void q(A x) A y yx.get() A z; z-y.p); public void r) Ax; xthis.get() q(x) class B extends A public B(A x)super(x): /constructor: calls A(A x) public A p)return this; class C extends B public C(A xsuper(x); //constructor; calls B(A x) public A get) return this; public A p) f Ax; x this.get ): return x; 1 class Main public static void main(String args) Ax, y: time moment 1 x - new C(null) time moment 2 time moment 3 y new B(x)

Explanation / Answer

At time moment 1:

The varibles of type A are created named x and y.
These will be stored in stack having references to x and y

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At time moment 2

Objects C type and B type are created...
Objects x and y are stored in heap and references will store in stack.

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At time moment3

Objects x and y are stored in heap and references are stored in stack.
y.r() method will store new x and y values ( y = x.get(); and x = this.get()) into stack.
New z object (z=y.p()) will store in heap and references will store in stack.

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