'OUR' STRUCTURE OF JAVA PROGRAMS

We will start with a simplified structure for Java programs initially
and expand it as we go.

1. Simplest: one class, one method:

   For now any Java program that you write will be in this structure.
   That is, a Java program consists of only one class containing only
   one function (aka method).  In that one function you will exercise
   your creativity. 

      public class ____ {

          public static void main (String[] args) {
              ...
          }

      }

   Your creativity will be exercised in coming up with the name of the
   class that you will be creating and the body of the method called
   'main'.  The ____ part is where you put the class name, and the
   ... part is where the body of your main goes.

   Most of the time I will give you the name of the class that you
   will be creating, specially if you are creating a class in the
   context of a homework assignment.  So, your creativity will be
   confined to the ... part of the program - at least for now.  The
   other things that you see in the structure above are just
   decorations that you need to (blindly) copy for now until I explain 
   what they all mean later.  Yes, I will explain all of those when
   the right time comes. 

   Example: the Hello program that we saw in Hello.java last time is
   in this structure as will other programs that we will study for a
   while.

   Note: A class named X should reside in a file named X.java, e.g.,
   Hello class in Hello.java, at least for now.

   One exception to this structure at this point: When you use the
   Scanner class a little later, you will see that we use

            import java.util.Scanner

   at the top of the file, outside the class that you create.  That
   will be the only exception to the structure that you should know
   about at this point.


2. Will expand this structure later.