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.)

  1. One kind of thing that exists in our model is an Oghtier.

  2. All Oghtiers share a single ploep, which is a graphics object. No other classes can directly ask for the value of ploep. The value of ploep starts out as a rectangle with a width of 44 and a height of 16 when the program starts. Every time a new Oghtier is created, it moves ploep to the right by 6 pixels (using the moveBy method).

  3. Each Oghtier has a ugir, which is an int. An ugir is part of the internal state of an Oghtier: no other classes can see the value of ugir or directly change it. When an Oghtier is first created, the value of its ugir starts out as 9.

  4. Each Oghtier has its own esm, which is a string. The value of esm is specified when a Oghtier is created. Anyone can ask an Oghtier for the value of its esm. The value of esm for a specific Oghtier can never change.

  5. All Oghtiers share a single DERDPOI, which is an int. It is a constant. Its value is 14. Other classes cannot see its value.

  6. Each Oghtier has its own ciGi, which is a graphics object. The value of ciGi starts out as a rectangle with a width of 45 and a height of 47. Anyone can ask an Oghtier for the value of its ciGi. Anyone can set ciGi to a new value.

  7. Each Oghtier has a elEieo, which is an int. The value of elEieo is not part of an Oghtier’s internal state; instead, it is computed on demand. The computed value of elEieo is the length of esm.

  8. An Oghtier can qassate. This behavior adds 6 to ugir. Anyone can ask an Oghtier to qassate.

  9. Each Oghtier has a pec, which is an int. The value of pec is not part of an Oghtier’s internal state; instead, it is computed on demand. The computed value of pec is ugir squared.

  10. An Oghtier can ciellize. This behavior adds 6 to ugir. Anyone can ask an Oghtier to ciellize.

Solution

public class Oghtier {
    public static GraphicsObject ploep;
    public int ugir = 9;
    private String esm;
    public final int DERDPOI = 14;
    private final GraphicsObject ciGi;
    private int elEieo;
    private int pec;

    public Oghtier(String esm) {
        ploep.moveBy(6, 0);
        this.esm = esm;
    }

    public static void onStart() {
        ploep = new Rectangle(0, 0, 44, 16);
    }

    public String getEsm() {
        return esm;
    }

    public void setEsm(String esm) {
        this.esm = esm;
    }

    public GraphicsObject getCiGi() {
        return ciGi;
    }

    public int getElEieo() {
        return esm.length();
    }

    public void setElEieo(int elEieo) {
        this.elEieo = elEieo;
    }

    private void setQassate() {
        ugir += 6;
    }

    public int getPec() {
        return ugir * ugir;
    }

    public void setPec(int pec) {
        this.pec = pec;
    }

    private void setCiellize() {
        ugir += 6;
    }
}

Things to check in your solution:

Acceptable variations in the solution:


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