Untitled

class User {
    private int level= 1;
    private int canSeeProfiles = 1;
    public int canBuyThings= 1;
    private int canSellThings= 1;

    public User(int level, int canSeeProfiles, int canBuyThings, int canSellThings) {
        this.level = level;
        this.canSeeProfiles = canSeeProfiles;
        this.canBuyThings = canBuyThings;
        this.canSellThings = canSellThings;
    }

    //yukarisi constructorlar
    // getterler

    public int getLevel() {
        return level;
    }

    public int getCanSeeProfiles() {
        return canSeeProfiles;
    }

    public int getCanBuyThings() {
        return canBuyThings;
    }

    public int getCanSellThings() {
        return canSellThings;
    }

    //setter örneği var burda
    public void setCanBuyThings(int canBuyThings) {
        this.canBuyThings = canBuyThings;
    }
}

// üst classı extendliyo
class NormalUser extends User {
    public NormalUser(){
        super(1,1,1,1);
    }
}

//bu silverlerin hepsi normallerin özelliklerine de sahip o yüzden extendliyo gold da silveri extendlicek
class SilverUser extends User {
    public SilverUser() {
        super(2, 2, 1, 1);
    }
}

class GoldUser extends SilverUser {
    public GoldUser() {
        super();
    }

    @Override
    public int getCanBuyThings() {
        return 4;
    }
    // Veya
    // sonra kod içerisinde setter
}

public class Main {
    public static void main(String[] args) {
        GoldUser gu = new GoldUser();
        System.out.println("\nGoldUser");
        System.out.println("Can Sell Things: " + gu.getCanSellThings());
        System.out.println("Can Buy Things: " + gu.getCanBuyThings());
        System.out.println("LeveL: " + gu.getLevel());

        NormalUser nu = new NormalUser();
        System.out.println("\nNormalUser");
        System.out.println("Level: " + nu.getLevel());
        System.out.println("Can Sell Things: " + nu.getCanSellThings());
        System.out.println("Can Buy Things: " + nu.getCanBuyThings());

        SilverUser su = new SilverUser();
        su.setCanBuyThings(2);
        System.out.println("\nSilverUser");
        System.out.println("Level: " + su.getLevel());
        System.out.println("Can Buy Things: " + su.getCanBuyThings());
        System.out.println("Can Sell Things: " + su.getCanSellThings());

    }
}