Sams Teach Yourself Java 2 in 21 Days, Second Edition

Exercises

To extend your knowledge of the subjects covered today, try the following exercises:

• In the main() method of the VolcanoRobot class, create a second VolcanoRobot robot named virgil, set up its instance variables, and display them.

• Create an inheritance hierarchy for the pieces of a chess set. Decide where the instance variables color, startingPosition, forwardMovement, and sideMovement should be defined in the hierarchy.

Where applicable, exercise solutions are offered on the book's Web site at http://www.java21days.com.