JedrykaNWD na 5

/* -------------Plik Main -------- */

package zadanie1a;

public class Main {

    public static void main(String[] args) {
        try {
            Nwd n = new Nwd(1, 20);
            n.setB(0);
            System.out.println("Dla a = " + n.getA() + " oraz B = " + n.getB() + " NWD wynosi: " + n.getNwd() + " lub: -" + n.getNwd());
        } catch (Exception e) {
            System.out.println("\u001B[31m"+ "NWD nie obsługuje 0" + "\u001B[0m");
            e.printStackTrace(System.out);
        }

    }
}



/* -------------Plik classa NWD -------- */

package zadanie1a;

public class Nwd {

    private int a;
    private int b;
    private int nwd;

    public Nwd(int a, int b) throws Exception{
         if (a == 0 || b == 0) throw new Exception("NWD nie obsługuje 0");
            this.a = a;
            this.b = b;
            nwd();
    }

    private void nwd(){
        int a = this.a;
        int b = this.b;

        /* Fixing problems */

        if (a < 0) a = Math.abs(a);
        if (b < 0) b = Math.abs(b);

        while (a != b) {
            if (a > b) {
                a = a - b;
            } else {
                b = b - a;
            }
        }
        this.nwd = a;
    }

    public int getA() {
        return a;
    }


    public void setA(int a) throws Exception{
        if(a == 0) throw new Exception("A nie moze przyjąć wartości 0");
        this.a = a;
        nwd();
    }

    public int getB() {
        return b;
    }


    public void setB(int b) throws Exception{
        if(b == 0) throw new Exception("B nie moze przyjąć wartości 0");
        this.b = b;
        nwd();
    }

    public int getNwd() {
        return nwd;
    }


}