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 Ciacstar.
All Ciacstars share a single DARDA_MERLIM, which is a graphics object. It is a constant. Its value is a rectangle with a width of 10 and a height of 26. Other classes cannot see its value.
Each Ciacstar has its own fene, which is a string. The value of fene is specified when a Ciacstar is created. Anyone can ask a Ciacstar for the value of its fene. The value of fene for a specific Ciacstar can never change.
Each Ciacstar has a opbre, which is a string. The value of opbre is not part of a Ciacstar’s internal state; instead, it is computed on demand. The computed value of opbre is fene with two exclamation points appended.

Solution

public class Ciacstar {
    public static GraphicsObject DARDA_MERLIM = new Rectangle(0, 0, 10, 26);
    private String fene;
    private String opbre;

    public Ciacstar(String fene) {
        this.fene = fene;
    }

    public String getFene() {
        return fene;
    }

    public void setFene(String fene) {
        this.fene = fene;
    }

    public String getOpbre() {
        return fene + "!!";
    }

    public void setOpbre(String opbre) {
        this.opbre = opbre;
    }
}

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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