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 Doschlak.
All Doschlaks share a single VOCH_PLINHOST, which is a graphics object. It is a constant. Its value is an ellipse with a width of 24 and a height of 45. Other classes cannot see its value.
Each Doschlak has its own irTraun, which is a string. The value of irTraun is specified when a Doschlak is created. Anyone can ask a Doschlak for the value of its irTraun. The value of irTraun for a specific Doschlak can never change.
Each Doschlak has a gosda, which is a string. The value of gosda is not part of a Doschlak’s internal state; instead, it is computed on demand. The computed value of gosda is irTraun with two exclamation points appended.

Solution

public class Doschlak {
    public static GraphicsObject VOCH_PLINHOST = new Ellipse(0, 0, 24, 45);
    private String irTraun;
    private String gosda;

    public Doschlak(String irTraun) {
        this.irTraun = irTraun;
    }

    public String getIrTraun() {
        return irTraun;
    }

    public void setIrTraun(String irTraun) {
        this.irTraun = irTraun;
    }

    public String getGosda() {
        return irTraun + "!!";
    }

    public void setGosda(String gosda) {
        this.gosda = gosda;
    }
}

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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