public class SolarModel {

public static void main(String[] args){
    SolarSystem model = new SolarSystem(700, 700);

    /* Create new instances of each object in the solar system */
    SunObject sun = new SunObject(0, 0, 50, "YELLOW", 0);
    PlanetObject mercury = new PlanetObject(60, 30, 15, "LIGHT_GRAY" ,5);
    PlanetObject venus = new PlanetObject(90, 30, 15, "GREEN", 3);
    PlanetObject earth = new PlanetObject(140, 30, 15, "BLUE", 2);
    PlanetObject mars = new PlanetObject(180, 30, 15, "RED", 1.2);

    MoonObject moon = new MoonObject(15, 30, 2, "WHITE", 1.5);

    while(true){
        /*Draw all the planets onto the SolarSystem model */
        model.drawSolarObject(sun.getDistance(), sun.getAngle(), sun.getDiameter(), sun.getColour());
        model.drawSolarObject(mercury.getDistance(), mercury.move(), mercury.getDiameter(), mercury.getColour());
        model.drawSolarObject(venus.getDistance(), venus.move(),venus.getDiameter(), venus.getColour());
        model.drawSolarObject(earth.getDistance(), earth.move(), earth.getDiameter(), earth.getColour());
        model.drawSolarObject(mars.getDistance(), mars.move(), mars.getDiameter(), mars.getColour());

        /* Draw the Earth's moon.
         * Use the Earth's PointInSpace as a point in which the moon orbits around
         */
        model.drawSolarObjectAbout(moon.getDistance(),moon.getAngle() + moon.move(), moon.getDiameter(), moon.getColour(),
                                    earth.getDistance(), earth.getAngle());

        /* Draw Mars's moon.
         * Use Mars's PointInSpace as a point in which the moon orbits around
         */
        model.drawSolarObjectAbout(moon.getDistance(), moon.getAngle() + moon.move(), moon.getDiameter(), moon.getColour(),
                                    mars.getDistance(), mars.getAngle());

        model.finishedDrawing();
        }
    }

}

public class PointInSpace {

private double distance;
private double angle;
private double diameter;
private String colour;
private double speed;

public double getDistance(){
    return distance;
}
public double getAngle(){
    return angle;
}
public double getDiameter(){
    return diameter;
}
public String getColour(){
    return colour;
}
public double getSpeed(){
    return speed;
}

public double move(){
    angle += speed;
    return angle;
}

public PointInSpace(double distance, double angle, double diameter, String colour, double speed){
    this.distance = distance;
    this.angle = angle;
    this.diameter = diameter;
    this.colour = colour;
    this.speed = speed;
    }

}

public SunObject(double distance, double angle, double diameter, String colour, double speed){
    super(distance, angle, diameter, colour, speed);

    }
}
    public PlanetObject(double distance, double angle, double diameter, String colour, double speed){
    super(distance, angle, diameter, colour, speed);

    }
}
    public MoonObject(double distance, double angle, double diameter, String colour, double speed){
    super(distance, angle, diameter, colour, speed);

    }
}