Java Community | Help. Code. Learn.•18h ago

Java Constructors

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lipOP•18h ago

public Musteri(String kullaniciAdi, String tamAdSoyad, int sifre) {
        this.kullaniciAdi = kullaniciAdi;
        this.tamAdSoyad = tamAdSoyad;
        this.sifre = sifre;
        uuid = new Random().nextInt(10000, 1000000);
        str = "Ad soyad: " + this.getTamAdSoyad() + "\n" + "Kullanıcı adı: " + this.getKullaniciAdi() + "\n" + "Müşteri kimlik numarası: " + this.getUuid() + "\n" + "Hesap mevcut mu: " ;
        System.out.println("Yönetici nesnesi oluşturulurken str: " +  "                       " + str);
        Test.getMusteriler().add(this);

        if(this instanceof Yonetici);
        else FileStore.addToTheFileConfig(this);
    }

public Musteri(String kullaniciAdi, String tamAdSoyad, int sifre) {
        this.kullaniciAdi = kullaniciAdi;
        this.tamAdSoyad = tamAdSoyad;
        this.sifre = sifre;
        uuid = new Random().nextInt(10000, 1000000);
        str = "Ad soyad: " + this.getTamAdSoyad() + "\n" + "Kullanıcı adı: " + this.getKullaniciAdi() + "\n" + "Müşteri kimlik numarası: " + this.getUuid() + "\n" + "Hesap mevcut mu: " ;
        System.out.println("Yönetici nesnesi oluşturulurken str: " +  "                       " + str);
        Test.getMusteriler().add(this);

        if(this instanceof Yonetici);
        else FileStore.addToTheFileConfig(this);
    }

public Yonetici(String kullaniciAdi, String tamAdSoyad, int sifre, Hesap hesap, int yetkiSeviyesi) {
        this.yetkiSeviyesi = yetkiSeviyesi;
        this.hesap = hesap;
        super(kullaniciAdi, tamAdSoyad, sifre);

        //uuid = new Random().nextInt(10000, 1000000);
        //str = "Ad soyad: " + getTamAdSoyad() + "\n" + "Kullanıcı adı: " + getKullaniciAdi() + "\n" + "Müşteri kimlik numarası: " + getUuid() + "\n" + "Hesap mevcut mu: " ;
        Test.getMusteriler().add(this);
        Test.getHesaplar().add(hesap);
        Test.getMusteriveHesabi().put(this, this.getHesap());

        FileStore.addToTheFileConfig(this);
    }

public Yonetici(String kullaniciAdi, String tamAdSoyad, int sifre, Hesap hesap, int yetkiSeviyesi) {
        this.yetkiSeviyesi = yetkiSeviyesi;
        this.hesap = hesap;
        super(kullaniciAdi, tamAdSoyad, sifre);

        //uuid = new Random().nextInt(10000, 1000000);
        //str = "Ad soyad: " + getTamAdSoyad() + "\n" + "Kullanıcı adı: " + getKullaniciAdi() + "\n" + "Müşteri kimlik numarası: " + getUuid() + "\n" + "Hesap mevcut mu: " ;
        Test.getMusteriler().add(this);
        Test.getHesaplar().add(hesap);
        Test.getMusteriveHesabi().put(this, this.getHesap());

        FileStore.addToTheFileConfig(this);
    }

so i have this 2 constructors right here and Yonetici inherits from the Musteri class and in Yonetici class it enters super(); section when it gets into it i want to know what happens i actually dont want

FileStore.addToFileConfig(this);

FileStore.addToFileConfig(this);

to work if its coming from Yonetici class' super(); section

dan1st•18h ago

you could add a check in the super constructor but practically, constructors shouldn't add the this object to other stuff, especially static variables or things like that

lipOP•18h ago

if(this instanceof Yonetici);
else FileStore.addToTheFileConfig(this);

if(this instanceof Yonetici);
else FileStore.addToTheFileConfig(this);

i did this there

dan1st•18h ago

oh I see Do you see the ; at the end of the if?

lipOP•18h ago

now i removed the comments and it works but idk if i made a problem

lipOP•18h ago

lipOP•18h ago

yes

dan1st•18h ago

if(something) doSomething();

if(something) doSomething();

means "call doSomething if something is true" However, if you add a semicolon like

if(something); doSomething();

if(something); doSomething();

it's the same as

if(something) { }
doSomething();

if(something) { }
doSomething();

so it basically runs the doSomething method regardless of the result of the condition

lipOP•18h ago

so you mean 'else' will be executed no matter what?

dan1st•18h ago

oh I didn't notce the else block but if you have something you don't want to do for subclasses, you should use a factory method instead of a public constructor

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