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.

Question 2

What will be the results of executing the following code, if the user simply clicks OK?
JPanel panel = new JPanel();
Color selectedColor;
SelectedColor = JColorChooser.showDialog(null,
"Select color", Color.blue);
Panel.setForeground(selectedColor);

Accepted Answer

A)  The foreground color will remain unchanged. 
B)  The foreground color will be set to white. 
C)  The foreground color will be set to black. 
D)  The foreground color will be set to blue.

Question 3

When a JList component is added to a JScrollPane object, a border will automatically appear around the list.

Accepted Answer

A) True 
 B)False

Question 4

You can create a label with an image, or with both an image and text.

Accepted Answer

A) True 
 B)False

Question 5

What will display when the following code is executed?
JButton button =
New JButton ("It is a beautiful day.");
Button.setIcon(SunnyFace.gif);

Accepted Answer

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

Question 6

If the letter chosen as the mnemonic is in the component's text, the first occurrence of that letter will appear ________ when the component is displayed.

Accepted Answer

A)  bolded 
B)  italicized 
C)  underlined 
D)  all of the above

Question 7

Both AWT classes and Swing classes ultimately inherit from the Component class.

Accepted Answer

A) True 
 B)False

Question 8

The getSelectedIndex method returns:

Accepted Answer

A)  the index of the selected item 
B)  -1 if no item is selected 
C)  both A and B 
D)  neither A nor B

Question 9

Images may be displayed in labels and:

Accepted Answer

A)  lists 
B)  buttons 
C)  combo boxes 
D)  panels

Question 10

By default the scroll bars are always displayed in a JList component.

Accepted Answer

A) True 
 B)False

Question 11

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 12

Which of the following statements creates a horizontal slider component with a minimum value of 0, a maximum value of 50, and an initial value of 25?

Accepted Answer

A)  JSlider slider = new JSlider(0, 50, 25, JSlider.HORIZONTAL); 
B)  JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 50, 25); 
C)  JSlider slider = new JSlider(JSlider.HORIZONTAL, 25, 0, 50); 
D)  JSlider slider = new JSlider(JSlider.HORIZONTAL, 50, 0, 25);

Question 13

If addressList exists and has values stored in it and addrList is an array with values stored in it, what will be the results when the following code is executed?
AddressList.setListData(addrList);

Accepted Answer

A)  The values of addrList will be attached at the end of the current addressList. 
B)  The values in addressList will be replaced by the values in addrList. 
C)  The values of addrList will be inserted at the beginning of the current addressList. 
D)  addressList will be unchanged.

Question 14

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 15

When an item in the combo box is selected, the combo box executes its action event listener's actionPerformed method, passing:

Accepted Answer

A)  an ItemEvent object as an argurment. 
B)  a SelectionEvent object as an argurment. 
C)  an ActionEvent object as an argument. 
D)  the combo box as an argument.

Question 16

A menu within a menu is called what?

Accepted Answer

A)  Nested menu 
B)  Submenu 
C)  Recursive menu 
D)  Formal list

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

The ImageIcon class constructor accepts:

Accepted Answer

A)  an integer that references the image 
B)  a String argument which is the name of the image file 
C)  a String argument which is the name of the image 
D)  It does not accept any arguments.

Exam 13: Advanced GUI Applications

The default selection mode for a JList component is:

What will be the results of executing the following code, if the user simply clicks OK? JPanel panel = new JPanel() ; Color selectedColor; SelectedColor = JColorChooser.showDialog(null, "Select color", Color.blue) ; Panel.setForeground(selectedColor) ;

When a JList component is added to a JScrollPane object, a border will automatically appear around the list.

You can create a label with an image, or with both an image and text.

What will display when the following code is executed? JButton button = New JButton ("It is a beautiful day.") ; Button.setIcon(SunnyFace.gif) ;

If the letter chosen as the mnemonic is in the component's text, the first occurrence of that letter will appear ________ when the component is displayed.

Both AWT classes and Swing classes ultimately inherit from the Component class.

The getSelectedIndex method returns:

Images may be displayed in labels and:

By default the scroll bars are always displayed in a JList component.

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

Which of the following statements creates a horizontal slider component with a minimum value of 0, a maximum value of 50, and an initial value of 25?

If addressList exists and has values stored in it and addrList is an array with values stored in it, what will be the results when the following code is executed? AddressList.setListData(addrList) ;

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() ;

When an item in the combo box is selected, the combo box executes its action event listener's actionPerformed method, passing:

A menu within a menu is called what?

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

The ImageIcon class constructor accepts: