17. What is the difference between a Window and a Frame?

Answer
The Frame class extends Window to define a main application window that can have a menu bar.

18. What is the relationship between the Canvas class and the Graphics class?

Answer
A Canvas object provides access to a Graphics object via its paint() method

19. Which TextComponent method is used to set a TextComponent to the read-only state?

Answer

setEditable()

20. How are the elements of a CardLayout organized?

Answer
The elements of a CardLayout are stacked, one on top of the other, like a deck of cards

21. What is the relationship between clipping and repainting?

Answer
When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that requires repainting.

22. What is the preferred size of a component?

Answer
The preferred size of a component is the minimum component size that will allow the component to display normally.

23. What method is used to specify a container's layout?

Answer
The setLayout() method is used to specify a container's layout.

24. Which containers use a FlowLayout as their default layout?

Answer
The Panel and Applet classes use the FlowLayout as their default layout.