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Bouncing Balls - a demonstration of graphical output on a Canvas class.
This project is part of the material for the book
Objects First with Java - A Practical Introduction using BlueJ
Sixth edition
David J. Barnes and Michael Kölling
Pearson Education, 2016
This project is discussed in chapter 6.
This project provides a short graphical demo in the BallDemo class.
This project provides scope for extension. The Canvas class does not
usually need to be changed. It may be best to treat it as a library
class (open the editor and switch to "documentation" view).
Other classes can be changed or added. The book contains suggestions
for various exercises.