Making Faces

This lab will give you more practice with your applet skills.

Starting a jar'ed applet
To Get Started ...

Download the jar file Face.jar to your csci/201 directory and then unjar the file (Help). Create a new project called Face and mount the Face directory that was extracted from the jar file in the step above (Help).

Click on the icon for the file. This should bring up the source code for the Face class. Go ahead and try to compile and run the program.

Bet that didn't work. The problem is that NetBeans assumes that new projects are applications, not applets. You need to change the executor. Go into the Filesystems pane of the Explorer panel and right-click on's icon. Next select Properties from the pop-up window. This will bring up a Properties of Face window. Now select the Execution tab at the bottom of the Properties window. Most likely the Executor is set to External Execution. Click on the words External Execution. This brings up a menu from which you must choose Applet Execution.

Your Assignment ...

Execute your applet after setting you have set for applet execution. You should see a rather abstract face with only a nose and mouth.

Now look at the Face applet that generates this program. If you need a refresher on applets, view the Applets lab.

Instructor Checkoff ...

Show your instructor that you have run the Face applet and have set up your project correctly.

Enhancing your Face

You need to modify the paint() method of the Face class to produce an improved face. (Ah, if all of life were so easy.) You are expected to be creative, both in designing the face and in using Java classes. Look at Sun's documentation for the Color and Graphics classes to see what colors and graphic objects are available. You might also find your textbook to be useful.

Understanding the Documentation

Take a look at Sun's on-line documentation for the fillArc method of Graphics. Everything we needed to know to draw that nose is located in this information. You just have to read and understand it. So give it a try! (By the way, reading and understanding documentation is a major part of the work life of a computer professional.)

In order to use the methods defined in the Graphics class, you need to remember how the display coordinate system is setup. The origin of the coordinate system is the top-left corner of the display, with the positive x-axis running horizontally to the right, and the positive y-axis running vertically down (not up) the right side of the display. Also, distances are measured in terms of pixels, the little dots that make up your screen.

Remember, the order in which the objects are drawn to the screen makes a difference. If you want to draw a black pupil in the center of a green iris, you must draw the surrounding iris first.

Some examples from the past

Here are some of the faces that students have created in the past when CSCI 201 was taught using C++. Most of these folks actually graduated from UNCA in spite of this assignment.

Your Assignment ...

This lab has more flexible rules than the others. However, it has few definite rules:

  1. You are strongly encouraged to work with a partner.
  2. You must use at least one color not seen in the original code.
  3. You must use at least two additional methods of from the Graphics object. We suggest you choose fillOval() for one of your two.
  4. Your Java-generated face must not resemble that of your lab instructor.

Going public (OPTIONAL)

Obviously, you want to show the world your creation. You can do this by FTP'ing your compiled Java code and your HTML file to your UNCA web page on bulldog. This requires a few steps, but we're certain you're up to the challenge. Just go back to a terminal screen and type the following commands:

[csciuser@mach dir] cd ~/csci/201/Face
[csciuser@mach dir] ftp
Connected to (
220 FTP server (Compaq Tru64 UNIX Version 5.60) ready.
Name ( bulluser
331 Password required for bulluser.
Password: type your bulldog password here, it will not be echoed
230 User bulluser logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> cd public_html
250 CWD command successful.
ftp> put Face.class
local: Face.class remote: Face.class
227 Entering Passive Mode (152,18,64,9,NN,NN)
150 Opening BINARY mode data connection for Face.class (152.18.69.NN,NNNN).
226 Transfer complete.
NNN bytes sent in XXX secs (XXX Kbytes/sec)
ftp> put Face.html
local: Face.html remote: Face.html
227 Entering Passive Mode (152,18,64,9,NN,NN)
150 Opening BINARY mode data connection for Face.html (152.18.69.NN,NNNN).
226 Transfer complete.
196 bytes sent in XXX secs (XXX Kbytes/sec)
221 Goodbye.

Remember, you type the words in maroon. Since you are transfering into your bulldog account, you must use your bulldog password and user id (in place of "bulluser"). Once you've done the file transfer, go to your web browser and try to load the URL If this results in the display of the message "You are not authorized to view this page", you need to log into and run the command openhomepage. A bit more information about this procedure is explained in the CSCI 107 -- Introduction to HTML lab description.

Instructor Checkoff ...

Show your Face to your lab instructor. The one you designed in the Java, that is.