CODEWITHSUNDEEP
java
arienn
arienn

Reputation: 230

Java - Method on new operator

Well, I'm not sure if I can do this but let me ask the question anyway...

I got class Budynek which constructor is like this:

public Budynek(int numerBudynku)
{
    this.id.nrBudynku = numerBudynku;
    this.id.nrPietra = 0;
    this.id.nrPokoju = 0;
}

so I am creating it like this:

Budynek Budynek1 = new Budynek(1);
Budynek Budynek2 = new Budynek(2);

Now I want to ask if there is any way to create a method that create new Budynek for me? Lets say if I use switch case, and case 1 will be "create new Budynek"

then I would like this method to do something like this

 e.g licznik = 1

Budynek Budynek+licznik(so it will be Budynek1) = new Budynek(licznik)

then just licznik = licznik + 1;

is that possible?

Upvotes: 0

Views: 86

Answers (2)

Murat Karagöz
Murat Karagöz

Reputation: 37604

You can create a List and store everything there, since your are indexing anyways with budynek+index

List<Budynek> budynekList = new ArrayList<Budynek>();

budynekList.add(new Budynek(10));
budynekList.add(new Budynek(20));
budynekList.add(new Budynek(400));

budynekList.get(index); // now you have your budynek objects with the given index.

As in the comments already pointed out, you can't declare variables on runtime.

Upvotes: 2

Joop Eggen
Joop Eggen

Reputation: 109577

Either

enum Budynek {
    BUDYNEK_A,
    BUDYNEK_B,
    BUDYNEK_C;

    public ID id;

    private Budynek() {
        this.id.nrBudynku = 1 + ordinal();
        this.id.nrPietra = 0;
        this.id.nrPokoju = 0;
    }
}

Budynek.BUDY_A.id.nrBudynku

or you must go for an array:

Budynek[] budyneki = new Budynek[3];
...
budyneki[0].id.nrBudynku
budyneki[1].id.nrBudynku
budyneki[2].id.nrBudynku

Upvotes: 0

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