> ### Quiz Questions
> For Chapter 7

> THIS PAGE CONTAINS A SAMPLE quiz on material from Chapter 7 of this on-line Java textbook. You should be able to answer these questions after studying that chapter. Sample answers to all the quiz questions can be found here.

> Question 1: What is the `FontMetrics` class used for?

> Question 2: An off-screen image can be used to do double buffering. Explain this. (What are off-screen images? How are they used? Why are they important? What does this have to do with animation?)

> Question 3: One of the main classes in Swing is the `JComponent` class. What is meant by a component? What are some examples?

> Question 4: What is the function of a LayoutManager in Java?

> Question 5: What does it mean to use a `null` layout manager, and why would you want to do so?

> Question 6: What is a `JCheckBox` and how is it used?

> Question 7: What is a thread

> Question 8: Explain how `Timers` are used to do animation.

> Question 9: Menus can contain sub-menus. What does this mean, and how are sub-menus handled in Java?

> Question 10: What is the purpose of the `JFrame` class?

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