public static void main(String[] args) {
Vektor x = new Vektor(1);
Vektor xy = new Vektor(2,3);
Vektor xyz = new Vektor(4,5,6);
x.show();
xy.show();
xyz.show();

[4,5,6]
[4,5,6]
[4,5,6]

public Vektor(int x) {
this.x = x;
alpha[0] = x;
}
public int[] show() {
System.out.println(Arrays.toString(alpha));
return alpha;