Date: Tue, 11 Feb 2003 13:06:47 (CST)
   From: Mark Jacobson <jacobson@cns.uni.edu>
     To: 810-061-02@uni.edu
Subject: Laundry Sorter due Friday by 5 p.m.

Hi Java students (11 TTh),

      The Laundry Sorter program will be extended so that you can
turn it in by Friday afternoon at 5 p.m. (Friday, February 14th).

      That way, if you do not have it done by classtime on Thursday,
you can still have another 30 hours until it is due.  I can talk about
any further problems you are having and you can get another 75 minutes
of Java discussion behind you.

      One example you will see on Thursday that is the last feature
you might need some help with for Laundry Sorter is:

      How to have counters in a program:

      The Laundry Sorter program counts:

                  Correct placements:  12

                Incorrect placements:   5

       so counters concepts and techniques will be discussed on
       Thursday.

       You would have a correctCount
                 and an incorrectCount variable,
                 each initialized to 0 (ZERO) in the begin() method.

       Somewhere in your program, probably in the onMouseRelease() event,
       you would have
                        correctCount = correctCount + 1;
                    and
                        incorrectCount = incorrectCount + 1;

           statements, protected by if or else or else if conditions.

                        Or have        correctCount++;
                            and        incorrectCount++;
                                                         would be okay too.
       Assume n is an int variable:     int n;
       Initialize n to value ZERO
                              with:     n = 0;

       In Java the statement:           n = n + 1;

                        increments variable n, i.e. adds 1 to its value.
                        Adding 1 is called counting or incrementing.

       In Java and C and PERL and C++ we can also write

                                        n++;

            when we wish to increment the variable n.

             n++;
                        is identical in effect to
             n = n + 1;

       I will try to put an applet version of today's class example,
the divide by 2, divide by 3 and remainder (mod 2 and mod 3) practice
program, on the class web page later today.

       URL:     http://www.cns.uni.edu/~jacobson/061

       See you in class on Thursday.

       Mark
------------------------------------------------------------------
      The Laundry Sorter program will be extended so that you can
turn it in by Friday afternoon at 5 p.m. (Friday, February 14th).
------------------------------------------------------------------