Asst 7: Due 12/5, any time


Working with Java and frameworks

In this assignment, you will get a taste of Java (if you haven't
already tried the language) as well as deal with a simple example of
working within a GUI framework.

The files Asst7.java and asst7.html define a simple Java applet (an
applet is a program designed to be invoked from within a Web page).

This applet defines a 400x400 pixel drawing area, and responds to
mouse clicks and drags within that area by drawing some colored lines
and rectangles.

Your task is to write your own applet, using the same basic
elements. The restrictions are:
  1) You should work by replacing any or all the mouseUp, mouseDown, 
     mouseDrag and paint functions for the class DrawingArea.  You may
     also add/remove/alter any data members you like to that class.

  2) The Asst7 class should be left alone.  

  3) You should restrict your actual graphics to the functions:
       clearRect (x, y, width, height), 
       drawLine  (x1, y1, x2, y2), 
       drawOval  (x, y, width, height), 
       drawRect  (x, y, width, height), 
       fillOval  (x, y, width, height), 
       fillRect  (x, y, width, height).
     You will find documentation on these at http://java.sun.com/products/jdk/1.1/docs/api/java.awt.Graphics.html

  4) The resulting applet must be interactive.  It should do SOMETHING
     in response to any mouse click. It may optionally respond to
     drags as well.
 
  5) There should be no changes required to the asst7.html file.


Be creative! See how interesting an applet you can make within this
limited domain.  (I will post the most interesting applets in 
the course web pages.)


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Working with java:

The makefile that is provided will control compilation (and, for some
of you, execution) of the Java compiler and interpreter.


Simply typing "make" will compile the Asst7.java file on our
system. (If you have a Java development kit on some other machine,
you will need to figure out for yourself how to invoke it properly.)

If you are seated at one of our workstations, running X windows, then
typing
   make run
will recompile the Asst7.java file if necessary, and then run the
resulting applet.


If you are working from a remote site (or if you simply don't like
using the above method), then you can use a Java-capable
browser to run the compiled applet.
Type
   make view 
(on a CS Dept workstation) to recompile the Asst7.java file if
necessary, and to then install the resulting applet in your own web
page.  You can then view the applet by pointing a web browser at
http://www.cs.odu.edu/~yourLoginName/Asst7/asst7.html



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What to turn in:
  Create a submission directory.  Within that directory, 
  place your .java file(s).

  If you have added additional .java files or renamed, also
  put an updated makefile in that directory. The makefile should 
  support the same functions as the original one.
  

  As always, do NOT submit executable code, compiled object code, etc.

  Any special notes, discussion, or explanation of unusual situations
  should go in a README.TXT file in the main submission directory.

  Use the command "submit cs412" to submit your submission directory.

  Your programs will be compiled and tested using automatic scripts,
  so exact adherence to instructions is important.

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