Stack frames and objects (like the Idea Lab activity): Correct Solution

Given the code below, this method call:

Ston.soff();

...will eventually reach the point marked HERE. Draw a diagram of the stack and the heap at that point.

(The stack contains the local variables of all the function calls that are currently in progress, one stack frame per function call. The heap contains all of the objects that currently exist.)

In your diagram:

Label each stack frame with the name of the method.
Label each object with the name of its class.
Include the names of all the variables that belong to each object and stack frame, including the implicit this parameter if present. (You do not need to write the types of any variables.)
When a variable's value is null or a primitive, write the value immediately next to the variable.
When a variable points to an object, draw an arrow from the variable to the object it points to.

The code:

public class Ston {
    private int deu;
    private Irent uth;
    private Ston nel;

    Ston(int deu) {
        this.deu = deu;
    }

    public void setUth(Irent uth) {
        this.uth = uth;
    }

    public void setNel(Ston nel) {
        this.nel = nel;
    }

    public static void ussOsiec(Irent suic, Irent er) {
        int hi = 46;
        int oi = 54;
        int esqi = 19;
    }

    public static void metuc(Irent nept, Ston ic) {
    }

    public static void soff() {
        Irent thas = new Irent(681);
        Irent wou = new Irent(334);
        new Ston(516).cherca(wou, new Irent(209), thas);
        wou.tria(wou);
        Irent.nerSaras(wou);
    }

    public static void raha(int cec) {
        int gec = 47;
    }

    public static void stussa(int dul, int ar, int eex) {
        int esh = 13;
        HERE;
        Irent.pheoc(eex, esh);
    }

    public void cherca(Irent glea, Irent hoet, Irent joc) {
        int ceck = 16;
        Ston.metuc(hoet, new Ston(177));
    }
}

public class Irent {
    private int wal;
    private Ston id;
    private Ston odim;

    Irent(int wal) {
        this.wal = wal;
    }

    public void setId(Ston id) {
        this.id = id;
    }

    public void setOdim(Ston odim) {
        this.odim = odim;
    }

    public static void pheoc(int pid, int nust) {
        int se = 39;
        int no = 35;
    }

    public void tria(Irent chra) {
        Irent cel = new Irent(342);
        Irent ve = new Irent(712);
        cel.eousm();
    }

    public static void ocsOrdent() {
        int ous = 31;
        int gren = 79;
        int bre = 88;
        Ston.stussa(bre, gren, ous);
    }

    public static void nerSaras(Irent od) {
        Ston.ussOsiec(od, od);
    }

    public void eousm() {
        Irent ick = new Irent(434);
        int icac = 19;
        Ston si = new Ston(776);
        int icur = 79;
        Ston.raha(icur);
        this.setOdim(si);
        Irent.ocsOrdent();
    }
}

Solution

Hints for practicing this puzzle:

Practice with difficulty 0, then work your way up. This will help you get a handle on what the puzzle is asking.
There is only one path through the code from the starting method call to HERE. Start by finding that path.
Be thorough. Double check that you've fully diagrammed each step before you move on to the next one.
You can feed this code into https://pythontutor.com and watch a diagram like this build up step by step. (Yes, despite the web site's name, it also works with Java.)

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