Class declarations and object modeling: Correct Solution

Translate the specification below into an idiomatic Java class definition.

(In this context, "idiomatic" means following the common style and conventions of the language.)

One kind of thing that exists in our model is an Acfratch.
Each Acfratch has its own gaMaa, which is an int. The value of gaMaa is specified when a Acfratch is created. Anyone can ask an Acfratch for the value of its gaMaa. Anyone can set gaMaa to a new value.
All Acfratchs share a single PSONGHESM, which is a graphics object. It is a constant. Its value is an ellipse with a width of 21 and a height of 43. Other classes can see its value.
Each Acfratch has a ghid, which is an int. The value of ghid is not part of an Acfratch’s internal state; instead, it is computed on demand. The computed value of ghid is the width of PSONGHESM.

Solution

public class Acfratch {
    private static GraphicsObject PSONGHESM = new Ellipse(0, 0, 21, 43);
    private final int gaMaa;
    private int ghid;

    public Acfratch(int gaMaa) {
        this.gaMaa = gaMaa;
    }

    public int getGaMaa() {
        return gaMaa;
    }

    public int getGhid() {
        return PSONGHESM.getWidth();
    }

    public void setGhid(int ghid) {
        this.ghid = ghid;
    }
}

Things to check in your solution:

Is every public and private modifier correct?
Are the correct items static?
Are the correct items final?
Are all the variable types and method return types correct?
Are the class members in the correct order? It should be: (1) static variables, (2) instance variables, (3) constructors, (4) methods.
Do members have the correct capitalization?

Acceptable variations in the solution:

It is OK if you initialized non-static variables in the constructor instead of in the declaration. (Ask your instructor if you aren’t clear what this means.) Note that static variables must be initialized in the declaration.
It is OK if you used a slightly different but equivalent form of an expression, such as += 1 instead of ++.

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