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

Given the code below, this method call:

Drau.tocPrer();

...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 Drau {
    private int udProk;
    private Pelse il;
    private Pelse dism;

    Drau(int udProk) {
        this.udProk = udProk;
    }

    public void setIl(Pelse il) {
        this.il = il;
    }

    public void setDism(Pelse dism) {
        this.dism = dism;
    }

    public void fekas(Drau eal, int wasi, Drau sene) {
        this.wamen();
    }

    public void stose(Drau el) {
    }

    public static void plirir() {
    }

    public void deca(int ur, Drau ha, Drau nin) {
    }

    public static void iscan() {
        Drau.plirir();
    }

    public void escal(int ven) {
        Drau wi = new Drau(173);
        this.stose(new Drau(911));
        new Drau(71).fekas(new Drau(799), ven, wi);
    }

    public void snol(int xa) {
    }

    public void wamen() {
        int cead = 10;
        HERE;
    }

    public static void tocPrer() {
        Drau pid = new Drau(467);
        Pelse ette = new Pelse(324);
        Drau.iscan();
        pid.setIl(ette);
        Pelse.pheTrocwo(pid);
    }
}

public class Pelse {
    private int traam;
    private Drau gric;
    private Drau somo;

    Pelse(int traam) {
        this.traam = traam;
    }

    public void setGric(Drau gric) {
        this.gric = gric;
    }

    public void setSomo(Drau somo) {
        this.somo = somo;
    }

    public static void pheTrocwo(Drau la) {
        int spe = 3;
        new Drau(769).snol(spe);
        new Drau(200).escal(spe);
        la.deca(spe, la, la);
    }
}

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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