java - Arrays.daudzsturi

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package day4_classes2;

import java.util.Scanner;

/**
 *
 * @author sao_7
 */
public class Daudzsturi {
    private double a, b, c, d;
    Scanner sc = new Scanner(System.in);
    //1. uztaisit konstruktoru, kas pieskir visiem mainigajiem vertibu 0
    public Daudzsturi (){
        a = 0;
        b = 0;
        c = 0;
        d = 0;
        maluskaits = 0;
    }
    //2. uztaisit velvienu privato mainiigo, kas atbildes malu skaitu
    private int maluskaits = 4;

    //3. malu skaitam uztaisat set metodi (hint- setA(int number))
    public void setMaluSkaits (int number){

          maluskaits = number;

    }
    //4. set metodi, kas pieskir vertibas mainigajiem a, b, c, d
    public void setMalas (double mala1, double mala2, double mala3, double mala4){
        a = mala1;
        b = mala2;
        c = mala3;
        d = mala4;
    }

    public void setMalas(double mala1, double mala2, double mala3){
        a = mala1;
        b = mala2;
        c = mala3;
    }
    //5. uztaisit metodi, kas aprekina perimetru un ar return atgriez vertibu
    public double getPerimetrs(){
        switch(maluskaits){
            case 3:
                return a + b + c;
            case 4:
                return a + b + c + d;
            default:
                return 0;
        }

    }
    //obligati jabut pozitiviem skaitliem- a, b, c un d obligati nav
}