Question 1

The _______ interface toolkit has a large set of user-interface components.

Accepted Answer

A)  GUI Builder 
B)  graphical user 
C)  Swing 
D)  JMenu

Question 2

What is the best first step in picking the layout managers for a set of nested panels?

Accepted Answer

A)  use a single panel with a GridBagLayout manager 
B)  construct a set of JPanel objects 
C)  make a sketch of the layout 
D)  use multiple panels with FlowLayout managers

Question 3

You wish to detect when the mouse is moved into a graphical component. Which methods of the associated MouseListener interface will provide this information?

Accepted Answer

A)  mouseMoved 
B)  mouseEntered 
C)  mouseOver 
D)  mouseIncoming

Question 4

A(n) ____ is used when you have a large set of choices.

Accepted Answer

A)  combo box 
B)  radio button 
C)  check box 
D)  action event

Question 5

The documentation for the JSlider class lists ____ inherited methods.

Accepted Answer

A)  less than 5 
B)  about 25 
C)  about 250 
D)  over 2500

Question 6

Which method can a program use to set the selected choice in a JRadioButton?

Accepted Answer

A)  set 
B)  setChoice 
C)  setSelectedItem 
D)  setSelected

Question 7

What is the best way to start using Swing components?

Accepted Answer

A)  Use a few classes with basic properties and methods, then explore API documentation 
B)  Learn all the classes in Swing and their inheritance hierarchies 
C)  Learn all the methods of the JComponent superclass before using any Swing components 
D)  Use a Swing component only after understanding all of its constructors

Question 8

If the user presses and releases a mouse button in quick succession, which methods of the MouseListener interface are called?

Accepted Answer

A)  mousePressed, mouseReleased, and mouseClicked. 
B)  mousePressed, mouseReleased, and mouseDblClicked 
C)  Only the mouseClicked method. 
D)  Only the mouseDblClicked method.

Question 9

What method is required by the ChangeListener interface?

Accepted Answer

A)  changeOccured 
B)  actionPerformed 
C)  stateChanged 
D)  sliderMoved

Question 10

What features do GUI builders have to speed the development of the graphical user interface of the program?
I setting properties of dialog boxes
II automated event-handling code generation
III drag and drop of visual components

Accepted Answer

A)  I 
B)  II 
C)  II and III 
D)  I, II and III

Question 11

What does the MouseAdapter class provide?

Accepted Answer

A)  The MouseAdapter class implements all of the methods of the MouseListener interface as do nothing methods. 
B)  The MouseAdapter class allows your program to accept input from multiple mice. 
C)  The MouseAdapter class implements all of the methods of the ActionListener interface as do nothing methods. 
D)  A class can implement the MouseAdapter class to handle mouse events.

Question 12

If you want to have a tabular arrangement of components, in which columns have different sizes or one component spans multiple columns, a ____ would be appropriate.

Accepted Answer

A)  grid bag layout 
B)  grid layout 
C)  flow layout 
D)  border layout

Question 13

What type of event does the JSlider class generate?

Accepted Answer

A)  ChangeEvent 
B)  ActionEvent 
C)  ItemEvent 
D)  SliderEvent

Question 14

Insert the missing code in the following segment. The code intends to get the newly selected item from the combo box.
JComboBox facenameCombo = new JComboBox();
String selectedString = __________________________;

Accepted Answer

A)  (String) facenameCombo.getSelected(); 
B)  (String) facenameCombo.getSelectedItem(); 
C)  (String) selectedString.getSelected(); 
D)  (String) selectedString.getSelectedItem();

Question 15

What is the default layout manager of the content pane of a JFrame?

Accepted Answer

A)  FlowLayout 
B)  GridLayout 
C)  BoxLayout 
D)  BorderLayout

Question 16

If the makeMenuItem method is called four times, at most how many different actions can be performed by these four newly created MenuItem objects when the doSomethingElse method is called?
Public JMenuItem makeMenuItem(String menuLabel)
{
JMenuItem mi = new JMenuItem(menuLabel);
Class MyMenuListener implements ActionListener
{
Public void actionPerformed(ActionEvent mi.addActionListener(new MyMenuListener());
Return mi;
}
}

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  {
DoSomethingElse(e);
}

Question 17

The statement that would add smallButton to the button group in the following code is _________.
JRadioButton smallButton = new JRadioButton("Small");
ButtonGroup group = new ButtonGroup();

Accepted Answer

A)  group.add(new smallButton); 
B)  group.add(smallButton); 
C)  smallButton.add(); 
D)  You cannot add smallButton to the button group.

Question 18

Suppose a JPanel with a BorderLayout manager contains two components: component1, which was added to the CENTER, and component2, which was added to the SOUTH. Which parts of the JPanel will appear?
I North
II South
III Center
IV West
V East

Accepted Answer

A)  I, II 
B)  I, II, III 
C)  III, IV and V 
D)  II and III

Question 19

Which of the following adds a border to the following panel?
JPanel panel = new JPanel();

Accepted Answer

A)  panel.addEtchedBorder(); 
B)  panel.addBorder(new EtchedBorder()); 
C)  panel.add(new EtchedBorder()); 
D)  panel.setBorder(new EtchedBorder());

Question 20

Which layout manager places objects left-to-right, and creates a new row only if when the current row cannot accommodate another object?

Accepted Answer

A)  FlowLayout 
B)  BorderLayout 
C)  BoxLayout 
D)  GridLayout

Exam 11: Advanced User Interfaces