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 Tont.
All Tonts share a single apli, which is a list of strings. No other classes can directly ask for the value of apli. The value of apli starts out as an empty mutable list when the program starts. Every time a new Tont is created, it adds "cian" to apli.
Each Tont has its own egReoss, which is a list of strings. The value of egReoss is specified when a Tont is created. Anyone can ask a Tont for the value of its egReoss. The value of egReoss for a specific Tont can never change.
Each Tont has a liIl, which is an int. The value of liIl is not part of a Tont’s internal state; instead, it is computed on demand. The computed value of liIl is the size of egReoss.

Solution

public class Tont {
    public static List<String> apli;
    private List<String> egReoss;
    private int liIl;

    public Tont(List<String> egReoss) {
        apli.add("cian");
        this.egReoss = egReoss;
    }

    public static void onStart() {
        apli = new ArrayList<>();
    }

    public List<String> getEgReoss() {
        return egReoss;
    }

    public void setEgReoss(List<String> egReoss) {
        this.egReoss = egReoss;
    }

    public int getLiIl() {
        return egReoss.size();
    }

    public void setLiIl(int liIl) {
        this.liIl = liIl;
    }
}

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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