Question 1

The default selection mode for a JList component is

Accepted Answer

A)   single selection
B)   single interval selection
C)   multiple interval selection
D)   There is no default setting. C

Question 2

To add a tool tip to a component use

Accepted Answer

A)   the setToolTipText method.
B)   the addToolTipText method.
C)   the toolTipText method.
D)   the appendToolTipText method. A

Question 3

When using a slider,by default,tick marks are not displayed,and setting their spacing does not cause them to be displayed.

Accepted Answer

A) True 
 B)False  True

Question 4

A label's preferred size is determined only by calling the setPreferredSize method.

Accepted Answer

A) True 
 B)False

Question 5

What does the following statement do? JTextArea textField = JTextArea(message,25,15);

Accepted Answer

A)   It creates a text area with 25 columns and 15 rows that will initially display the text stored in the String object message.
B)   It creates a text area with 25 columns and 15 rows that will initially display the text stored in the text area textField.
C)   It creates a text area with 25 rows and 15 columns that will initially display the text stored in the String object message.
D)   It creates a text area with 25 rows and 15 columns that will initially display the text "message".

Question 6

If addressList is a JList component,what will the value of x be after the following statement is executed? x = addressList.getSelectedIndex();

Accepted Answer

A)   The value of the first selected item.
B)   The index of the first selected item.
C)   An array of objects containing the items selected.
D)   An array containing the indices of all the selected items in the list.

Question 7

Which of the following assigns ALT+C as a mnemonic key for the JButton object,clearButton?

Accepted Answer

A)   clearButton.addMnemonic(KeyEvent.VK_
C)  ;
B)   clearButton.setMnemonic(KeyEvent.
C)  ;
C)   clearButton.setMnemonic(KeyEvent.VK_
C)  ;
D)   clearButton.assignMnemonic(KeyEvent.VK_
C)  ;

Question 8

If nameList is a JList component,use the following statement to display 4 rows in nameList.

Accepted Answer

A)   nameList.setRowCount(4) ;
B)   nameList.setDisplayRowCount(4) ;
C)   nameList.setShowRowCount(4) ;
D)   nameList.setVisibleRowCount(4) ;

Question 9

In the following code the setPreferredSize method sets the size of the text,"Have a good day".
label = new Jlabel("Have a good day",SwingConstants.CENTER);
label.setPreferredSize(new Dimension(400,200));

Accepted Answer

A) True 
 B)False

Question 10

To add the JList object addressList to a scroll pane named scrollPane,use the following

Accepted Answer

A)   JScrollPane scrollPane = new JScrollPane(addressList) ;
B)   scrollPane.add(addressList) ;
C)   addressList.add(scrollPane) ;
D)   addressList.addScrollPane(scrollPane) ;

Question 11

A menu system may consist of each of the following,except

Accepted Answer

A)   check box menu item
B)   combo box menu item
C)   radio button menu item
D)   menu item

Question 12

If the combo box addressBox contains a list of strings,why is the returned value of getSelectedItem method in the following code cast to String? String selectedAddress;
SelectedAddress = (String)addressBox.getSelectedItem();

Accepted Answer

A)   This is not necessary.
B)   Because the syntax of the method requires it.
C)   It makes the program more readable
D)   Because the return type of the method is an Object.

Question 13

A mnemonic is

Accepted Answer

A)   A single key on the keyboard that you press to quickly access a component such as a button.
B)   A key on the keyboard that you press in combination with the SHIFT key to quickly access a component such as a button.
C)   A key on the keyboard that you press in combination with the ALT key to quickly access a component such as a button.
D)   A key on the keyboard that you press in combination with the CTRL key to quickly access a component such as a button.

Question 14

What will display when the following code is executed: JLabel label = new JLabel ("It is a beautiful morning.");
Labed.setIcon(SunnyFace.gif);

Accepted Answer

A)   A label with the text "It is a beautiful day." to the left of the SunnyFace image.
B)   A label with the text "It is a beautiful day." to the right of the SunnyFace image.
C)   A label with the text "It is a beautiful day." below the SunnyFace image.
D)   A label with the text "It is a beautiful day." above the SunnyFace image.

Question 15

The JComboBox class is in the

Accepted Answer

A)   javax.swing package
B)   java.awt package
C)   java awt.event package
D)   java.swing.event package

Question 16

To force the JFrame that encloses a window to resize itself automatically when a larger object is placed in the frame,use

Accepted Answer

A)   the pack method.
B)   the resize method.
C)   the grow method.
D)   the enlarge method.

Question 17

A tool tip is

Accepted Answer

A)   a guide provided by the Help menu as to which tool to use for various programming techniques.
B)   another name for the Tool Bar.
C)   used to make programming easier.
D)   text that is displayed in a small box when the user holds the mouse cursor over a component.

Question 18

The default directory for the JFileChooser constructor is

Accepted Answer

A)   Your login directory if you are using UNIX
B)   Probably My Documents if you are using Windows
C)   Neither a nor b
D)   Both a and b

Question 19

Which of the following is not a class used in constructing a menu system?

Accepted Answer

A)   JMenuItem
B)   JCheckBoxMenuItem
C)   JButton
D)   JRadioButtonMenuItem

Question 20

When you create an instance of the JList class,

Accepted Answer

A)   you pass an array of objects to the constructor.
B)   the list has a default selection mode of Single Selection Mode.
C)   the values in the list are automatically sorted.
D)   you must indicate the maximum number of list items the user may select at any one time.

Exam 13: Advanced Gui Applications