Iteration and Loops in Java
		Iterations allow us to execute the same lines of code multiple times.  In Java 1.4.2, we can use the while loop, the do-while loop, and the for loop.  When would you use these loops?  Think of some examples. When designing a loop, you may end up with an infinite loop, either intentionally or unintentionally.  When designing variables, be careful to consider their scope in a loop.  The book mentions several other 'watch-outs'.  Among them: Don't put a semicolon after the close parenthesis of the loop statement.  An open curly should be the next symbol. Most of our loops use the > or < operators.