<p>I am confused about the relationship between world and grid. When do you use which and such, do you always use one to compliment the other such as in:</p>
<pre><code>ActorWorld world = new ActorWorld();
Grid gr = new BoundedGrid(10,10);
Actor clown = new Actor();
Location loc = new Location(3,4);
world.add(loc,clown);
gr.put(loc, clown);
world.show();
</code></pre>
<p>Thanks! ;D</p>
<p>Hi. The world class is not part of the appendix at the end of the test. So the college board would never ask you to write a new method or class using the world class.</p>
<p>The world class helps create graphics when you actually run a program on a computer. The Grid keeps track of the Actors themselves. You would never really write something that has both a World and a Grid at the same time.</p>