public class Planet4 {
    private double radie;
    private double x;
    private double y;
    private double z;

    public Planet4(double radie, double x, double y, double z) {
        this.radie = radie;
        this.x = x;
        this.y = y; 
        this.z = z;
    }//konstruktor

    public double computeVolume() {
        return 4* Math.PI*Math.pow(radie, 3) / 3;
    }//computeVolume

    public double computeDistance(Planet4 other) {
        return Math.sqrt(Math.pow(this.x - other.x, 2)  
                    + Math.pow(this.y - other.y, 2) 
                    + Math.pow(this.z - other.z, 2));
    }//computeDistance

} //Planet