public class World
{
    public static final int SIZE = 4;
    private MapElement [][] aMap;

    // Steps through the entire 4x4 array and each
    // element will refer to (or contain the address of) 
    // a MapElement object whose appearance is space, # or !
    public World()
    {
        int r;
        int c;
        aMap = new MapElement[SIZE][SIZE];

        for (r = 0; r < SIZE; r++)
        {
             for (c = 0; c < SIZE; c++)
             {
                 aMap[r][c] = new MapElement();
             }
        }
    }
}