I know I am missing something when I try to run it it says that it doesn't contain a main type. I am probably missing something really easy but here is what I have.
public class Cube
{
public static void main()
{
double height = 3.0;
double cube_volume = height * height * height;
double surface_area = 8 * height;
System.out.println("Volume = " + cube_volume);
System.out.println("Surface area = " + surface_area);
}
}