planet get

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Planet here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Planet extends Actor
{

    public int getValue() 
    {
        int x = Greenfoot.getRandomNumber(100);

        return x;
    }

    public void getPlanet()
    {
        int a = getValue();

        if (a>0 && a<30)
        {
            setImage("button-green.png");
        }
        if (a>30 && a<50)
        {
            setImage("button-red.png");
        }
        if (a>50 && a<70)
        {
            setImage("button-blue.png");
        }

    }

    public void act()
    {
        this.getPlanet();
    }
}