Assignment 1

CSC 241- Assignment 1 (Due July 15th 1996)

You will develop your first applet here. Develop a traffic light that you can control with a switch button. To see what your light should look like follow the link for Traffic Light . Be aware that your traffic light will behave slightly differently than mine does.

You should be able to cut the html file that I have written for my traffic light and paste it to your own as shown in Lab #1.
Change the codebase to reflect in where your classes directory is: codebase="http://www.oswego.edu/~your account/classes/"
For code, provide the address of the .class file relative to the classes directory. For example, if you name the file for your traffic light class, tr.java and place it in your csc241 subdirectory, you will need the following code statement: code="csc241.tr.class". Also, in this example, you must have csc241 as your package name in the tr.java file itself.
Develop a Java applet that displays a traffic light with similar dimensions as mine with an obvious difference in the way the light changes as described below.
1. Your rectangle should be filled with black. The three circles, red, yellow, and green, should be designed to be drawn inside the rectangle in a reasonably symmetrical manner.
2. Circles representing each light should be gray when off, and should have the appropriate color when on.
3. There must be a switch button.
4. The light must start as red.
5. Each time the Switch button is clicked, it should change to the next color. When traffic light is red and the button is clicked, the light should change to green. When the light is green and the button is clicked, the light should change to yellow. When the light is yellow and the button is clicked, the light should change to red. Building the traffic light that works like mine (When green and switch is clicked, change light to yellow, pause, then to red), requires a more indepth knowledge of how applets work than you have at this point, so don't try to do that.
To find the right Graphics methods, follow the link to Graphics class. Also, check out hello3.java for hints on drawing things and creating buttons and what methods you need to write.
Email me the URL for the traffic light's HTML file, also include a link to it in your homepage.
Email your .java file as an attachment.
Remember that your .class file and the .html file and the path to them must be public, but DO NOT make your .java file public. Check out Lab #1 on how you make files public.