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 a Swiastcun.

  2. Each Swiastcun has a plour, which is an int. A plour is part of the internal state of a Swiastcun: no other classes can see the value of plour or directly change it. When a Swiastcun is first created, the value of its plour starts out as 13.

  3. Each Swiastcun has its own ucFert, which is a graphics object. The value of ucFert is specified when a Swiastcun is created. Anyone can ask a Swiastcun for the value of its ucFert. Anyone can set ucFert to a new value.

  4. All Swiastcuns share a single afid, which is a graphics object. No other classes can directly ask for the value of afid. The value of afid starts out as a rectangle with a width of 28 and a height of 25 when the program starts. Every time a new Swiastcun is created, it moves afid to the right by 2 pixels (using the moveBy method).

  5. Each Swiastcun has its own pra, which is an int. The value of pra is specified when a Swiastcun is created. Anyone can ask a Swiastcun for the value of its pra. The value of pra for a specific Swiastcun can never change.

  6. All Swiastcuns share a single SECTMI, which is a list of strings. It is a constant. Its value is ["nesmin", "si", "sinio"]. Other classes can see its value.

  7. All Swiastcuns share a single HIAC_FA, which is a graphics object. It is a constant. Its value is an ellipse with a width of 30 and a height of 11. Other classes can see its value.

  8. Each Swiastcun has its own dass, which is a list of strings. The value of dass is specified when a Swiastcun is created. Anyone can ask a Swiastcun for the value of its dass. The value of dass for a specific Swiastcun can never change.

  9. Each Swiastcun has a deock, which is an int. The value of deock is not part of a Swiastcun’s internal state; instead, it is computed on demand. The computed value of deock is pra plus 8.

  10. A Swiastcun can efesmify. This behavior adds 6 to plour. Anyone can ask a Swiastcun to efesmify.

  11. A Swiastcun can lavumize. This behavior adds 5 to plour. Anyone can ask a Swiastcun to lavumize.

  12. Each Swiastcun has a spoe, which is an int. The value of spoe is not part of a Swiastcun’s internal state; instead, it is computed on demand. The computed value of spoe is plour plus 6.

  13. A Swiastcun can brelify. This behavior adds 4 to plour. Anyone can ask a Swiastcun to brelify.

  14. Each Swiastcun has a fatci, which is a string. The value of fatci is not part of a Swiastcun’s internal state; instead, it is computed on demand. The computed value of fatci is the first element of dass.

Solution

public class Swiastcun {
    public static GraphicsObject afid;
    private static List<String> SECTMI = List.of("nesmin", "si", "sinio");
    private static GraphicsObject HIAC_FA = new Ellipse(0, 0, 30, 11);
    public int plour = 13;
    private final GraphicsObject ucFert;
    private int pra;
    private List<String> dass;
    private int deock;
    private int spoe;
    private String fatci;

    public Swiastcun(GraphicsObject ucFert, int pra, List<String> dass) {
        this.ucFert = ucFert;
        afid.moveBy(2, 0);
        this.pra = pra;
        this.dass = dass;
    }

    public GraphicsObject getUcFert() {
        return ucFert;
    }

    public static void onStart() {
        afid = new Rectangle(0, 0, 28, 25);
    }

    public int getPra() {
        return pra;
    }

    public void setPra(int pra) {
        this.pra = pra;
    }

    public List<String> getDass() {
        return dass;
    }

    public void setDass(List<String> dass) {
        this.dass = dass;
    }

    public int getDeock() {
        return pra + 8;
    }

    public void setDeock(int deock) {
        this.deock = deock;
    }

    private void setEfesmify() {
        plour += 6;
    }

    private void setLavumize() {
        plour += 5;
    }

    public int getSpoe() {
        return plour + 6;
    }

    public void setSpoe(int spoe) {
        this.spoe = spoe;
    }

    private void setBrelify() {
        plour += 4;
    }

    public String getFatci() {
        return dass.get(0);
    }

    public void setFatci(String fatci) {
        this.fatci = fatci;
    }
}

Things to check in your solution:

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