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 a Rareas.
All Rareass share a single goSpe, which is a graphics object. No other classes can directly ask for the value of goSpe. The value of goSpe starts out as a rectangle with a width of 15 and a height of 21 when the program starts. Every time a new Rareas is created, it moves goSpe to the right by 9 pixels (using the moveBy method).
All Rareass share a single HIOS_CADMAEL, which is a graphics object. It is a constant. Its value is a rectangle with a width of 42 and a height of 19. Other classes can see its value.
A Rareas can etbusify. This behavior moves goSpe to the right by 1 pixels (using the moveBy method). Anyone can ask a Rareas to etbusify.

Solution

public class Rareas {
    public static GraphicsObject goSpe;
    private static GraphicsObject HIOS_CADMAEL = new Rectangle(0, 0, 42, 19);

    public Rareas() {
        goSpe.moveBy(9, 0);
    }

    public static void onStart() {
        goSpe = new Rectangle(0, 0, 15, 21);
    }

    private void setEtbusify() {
        goSpe.moveBy(1, 0);
    }
}

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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