Deck 17: Swing I

Question 1

The JFrame method setVisible()takes one argument of type:
(a)byte
(b)boolean
(c)int
(d)short

Answer 1

B

Question 2

A button component should have a registered _____________ associated with it.
(a)pixel
(b)JFrame
(c)listener
(d)none of the above

Answer 2

C

Question 3

The _______________ manager arranges components in a two-dimensional table with some number of rows and columns.
(a)BorderLayout
(b)FlowLayout
(c)GridLayout
(d)AbsoluteLayout

Answer 3

C

Question 4

Standard layout managers are defined in the ____________ package.
(a)javax.swing
(b)java.util
(c)java.awt
(d)java.lang

Question 5

A _____________ allows multiple lines of text to be displayed.
(a)JTextField
(b)JTextArea
(c)JTextBox
(d)JTextValue

Question 6

The getText()method of a JTextField object returns an object of type:
(a)Double
(b)Integer
(c)Boolean
(d)String

Question 7

Composition indicates a/an _______________ relationship.
(a)Is-a
(b)Has-a
(c)both A & B
(d)none of the above

Question 8

In event-driven programming,your program determines the order in which things happen.

Question 9

The ActionListener interface requires that the method ____________ be implemented.
(a)actionEvent()
(b)actionFired()
(c)actionRegistered()
(d)actionPerformed()

Question 10

The event-driven paradigm requires implementing methods that will never be invoked.

Question 11

A button fires events know as:
(a)static events
(b)passive events
(c)dynamic events
(d)action events

Question 12

Inheritance indicates a/an ____________ relationship.
(a)Is-a
(b)Has-a
(c)both A & B
(d)none of the above

Question 13

A _____________ is an object that is a simple container class that groups other objects.
(a)JPanel
(b)JMenu
(c)JButton
(d)JTextArea

Question 14

The close-window button is in the class JButton.

Question 15

A programming style that uses a signal and response approach to programming is called:
(a)Object Oriented Programming
(b)Structured Programming
(c)Event-driven Programming
(d)Bottom-up Programming

Question 16

A ____________ is the smallest unit of space on which your screen can write.
(a)pixel
(b)dot
(c)bit
(d)font

Question 17

The _____________ manager is the simplest layout manager.It arranges components one after the other,going from left to right,in the order in which you add them.
(a)BorderLayout
(b)FlowLayout
(c)GridLayout
(d)AbsoluteLayout

Question 18

GUIs are windowing interfaces that handle user input and output.

Question 19

A menu item is an object of the class:
(a)JMenu
(b)JMenuBar
(c)JMenuItem
(d)none of the above

Question 20

The _____________ manager places components into five regions.
(a)BorderLayout
(b)FlowLayout
(c)GridLayout
(d)AbsoluteLayout

Question 21

What is an action listener? What is an action event?

Question 22

What are three common objects you must deal with when using a Swing container class?

Question 23

Add button functionality to the resulting GUI of number 2 above.When the button is clicked,the title of the window changes to "Modified First Window".

Question 24

Create a Java GUI application that contains a label and a button.The label reads "Click the button to change the background color." When the button is clicked,the background is changed to a different color.

Question 25

Create a Java GUI that allows the user to enter a desired user name and password.Provide a button,when clicked,informs the user that their account was successfully created.Include labels as appropriate.

Question 26

A Swing program does not end until it encounters a System.exit statement.

Question 27

One of the main functions of JPanel objects is to subdivide a JFrame (or other container)into different areas.

Question 28

In a Swing program,throwing an uncaught exception may leave the program in an unpredictable state.

Question 29

The actionPerformed method of the ActionListener interface returns a Boolean value.

Question 30

Explain the model-view-controller pattern when applied to a typical GUI.

Question 31

Events and listeners for menu items are handled in exactly the same way as they are for buttons.

Question 32

When using the BorderLayout manager you must specify all five regions.

Question 33

Write a Java statement to add a title to the window in the GUI created in number 1 above that says "First Window".

Question 34

Write a Java statement to create a menu with the title "Drawing Template".

Question 35

Write Java statements to add the menu created in number 7 above to the menu bar.

Question 36

A JMenu can not be a menu item in another menu.

Question 37

Write Java statements to add menu items named "Circle","Square",and "Rectangle" to the menu created in number 7 above.