2006-03-19T05:21:00.000+11:00

Week 5, Autumn Session, March 2006 (to be submitted on the day of your Lab session)
Introduction
Java environment provides multimedia facilities for programmers to develop powerful multimedia
applications immediately and easily. Most other programming languages do not have a built-in
multimedia capability, which means that you as a programmer has to write a lot more codes to
implement them by yourself.
In this assignment, you are going to develop a multimedia applet with image, audio and 2D text.
The applet will be able to interact with users through a mouse action (event).
On completion of this assignment, you should have explored the Java core APIs relating to image,
graphics, audio and text and also experienced how Java programs interact with mouse events. You
will also have used some basic control structures and data types of the Java language. At the same
time, you may find the limitations of those core Java APIs for manipulating multimedia.
Tasks and Requirements
In this assignment, you will write a Java applet to display an image as the background, play
background music and draw animated 2D text.
General Requirements:
· You should observe the common principles of OO programming when you design your Java
classes, which include abstraction, encapsulation, inheritance and polymorphism.
· You should create your classes by making use of features of the Java classes
· You should make proper documentation and implementation comments in your codes where
they are necessary.
· Logical structures and statements are properly used for specific purposes.
· Your code should comply with the major requirements of Java Code Conventions.

Task 1: Display images in the applet
Requirements: Your applet loads an image from an file in a proper format and displays it properly
in the applet as the background. You can use any image of any size you like. You need to check
what image formats are supported and make sure the format you use are included.
Task 2: Play a piece of music at background
Requirements: Your applet loads a piece of music from an audio file in a proper format and plays
it at background as soon as the applet starts. You can play a piece of music of proper length. (not
too long) You need to ensure it make sense when it is played continuously or in other words,
looped. You need to check what audio formats are supported and make sure the format you use are
included.
Task 3: Draw animated 2D texts over the background image
Requirements: Your applet draws animated 2D texts. Your texts should be animated (from small to
large or from one side to any position) and stay at the centre of the applet after the animation
finishes. You should use 2D text with proper fonts, colours or texture.
Task 4: Restart the animation with a mouse event
Requirements: After the animation finishes, a mouse click at the applet should start the animation
again from the beginning.
Submission:
1. You need to submit all the files required for your applet to work. For example, all image
and audio files.
2. You need to submit the source file, bytecode file and HTML file.
3. You should submit them in a zipped format with your userID as the filename.
4. This assignment needs only to be submitted as a soft copy.
Marking Scheme:
General requirements 20%
Task 1 20%
Task 2 20%
Task 3 20%
Task 4 20%

Holy See