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Answers to Questions and Exercises: Object-Oriented Concepts

Answers to Questions

1. Question: The ClickMe applet uses Color.red to set the drawing color to red. What other colors can you get by name like this?
   Answer: Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green, Color.lightGray, Color.magenta, Color.orange, Color.pink, Color.white, and Color.yellow

2. Question: How would you specify other colors, like purple?
   Answer: You specify them using the RGB (red-green-blue) color model. In RGB, purple is: 0.5, 0.0, 0.5

Answers to Exercises

To read explanations about the solutions and to run the resulting applets, see Run the ClickMe Applets.

1. Exercise: Modify the applet to draw a green square instead of a red spot.
   Answer: Look at our solution, contained in the ClickMeGreen.java source file.

2. Exercise: Modify the applet to display your name in purple instead of a red spot.
   Answer: Look at our solution, contained in the ClickMePurple.java source file.

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