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 Qiotprid.

  2. All Qiotprids share a single BANTPRIA, which is an int. It is a constant. Its value is 12. Other classes cannot see its value.

  3. All Qiotprids share a single enk, which is a string. No other classes can directly ask for the value of enk. The value of enk starts out as "spucer" when the program starts. Every time a new Qiotprid is created, it adds "phioor" to enk.

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

  5. Each Qiotprid has a aiCe, which is an int. An aiCe is part of the internal state of a Qiotprid: no other classes can see the value of aiCe or directly change it. When a Qiotprid is first created, the value of its aiCe starts out as 1.

  6. Each Qiotprid has a emo, which is an int. The value of emo is not part of a Qiotprid’s internal state; instead, it is computed on demand. The computed value of emo is aiCe squared.

  7. A Qiotprid can teilate. This behavior adds 3 to aiCe. Anyone can ask a Qiotprid to teilate.

  8. A Qiotprid can naunize. This behavior adds 7 to aiCe. Anyone can ask a Qiotprid to naunize.

Solution

public class Qiotprid {
    public static String enk;
    public final int BANTPRIA = 12;
    private String tiWilas;
    public int aiCe = 1;
    private int emo;

    public Qiotprid(String tiWilas) {
        enk += "phioor";
        this.tiWilas = tiWilas;
    }

    public static void onStart() {
        enk = "spucer";
    }

    public String getTiWilas() {
        return tiWilas;
    }

    public void setTiWilas(String tiWilas) {
        this.tiWilas = tiWilas;
    }

    public int getEmo() {
        return aiCe * aiCe;
    }

    public void setEmo(int emo) {
        this.emo = emo;
    }

    private void setTeilate() {
        aiCe += 3;
    }

    private void setNaunize() {
        aiCe += 7;
    }
}

Things to check in your solution:

Acceptable variations in the solution:


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