Question 1

Which of the following statements for a JTextField is false?

Accepted Answer

A) Can be used to display uneditable text. 
B) Can be used to display editable text. 
C) Enables users to enter data from the keyboard. 
D) Displays a list of fields. 
A) Can be used to display uneditable text. 
B) Can be used to display editable text. 
C) Enables users to enter data from the keyboard. 
D) Displays a list of fields. D

Question 2

Which of the following objects cannot trap mouse events?

Accepted Answer

A) JTextField. 
B) ButtonGroup. 
C) JButton. 
D) JComponent. 
A) JTextField. 
B) ButtonGroup. 
C) JButton. 
D) JComponent. B

Question 3

Some common lightweight component features supported by JComponent include:

Accepted Answer

A) support for user-interface localization. 
B) shortcut keys. 
C) tool tips. 
D) All of the above. 
A) support for user-interface localization. 
B) shortcut keys. 
C) tool tips. 
D) All of the above. D

Question 4

Which JFrame constant indicates that the program should terminate when the window is closed by the user?

Accepted Answer

A) TERMINATE_ON_CLOSE. 
B) IMMEDIATELY_CLOSE. 
C) EXIT_ON_CLOSE. 
D) All of the above. 
A) TERMINATE_ON_CLOSE. 
B) IMMEDIATELY_CLOSE. 
C) EXIT_ON_CLOSE. 
D) All of the above.

Question 5

Which method determines if a JCheckBox is selected?

Accepted Answer

A) isSelected 
B) getSelected 
C) selected 
D) None of the above 
A) isSelected 
B) getSelected 
C) selected 
D) None of the above

Question 6

Together,the appearance and the way in which the user interacts with the application are known as that application's ________.

Accepted Answer

A) abstract window toolkit. 
B) look-and-feel. 
C) swing factor. 
D) All of the above. 
A) abstract window toolkit. 
B) look-and-feel. 
C) swing factor. 
D) All of the above.

Question 7

How many event-listener interfaces correspond to each event type?

Accepted Answer

A) one. 
B) two. 
C) one or more. 
D) zero. 
A) one. 
B) two. 
C) one or more. 
D) zero.

Question 8

Which of the following does not generate GUI events?

Accepted Answer

A) Typing in a text field. 
B) Selecting an item from a menu. 
C) Viewing the text in a label. 
D) Moving the mouse. 
A) Typing in a text field. 
B) Selecting an item from a menu. 
C) Viewing the text in a label. 
D) Moving the mouse.

Question 9

Each container can have ________.

Accepted Answer

A) only one layout manager 
B) one or more layout managers 
C) zero or more layout managers 
D) only one or two layout managers 
A) only one layout manager 
B) one or more layout managers 
C) zero or more layout managers 
D) only one or two layout managers

Question 10

Which of the following statements about JPanels is false?

Accepted Answer

A) A JPanel is a JComponent. 
B) A JPanel is a Container. 
C) A JPanel does not have a content pane. 
D) A JPanel has a fixed size. 
A) A JPanel is a JComponent. 
B) A JPanel is a Container. 
C) A JPanel does not have a content pane. 
D) A JPanel has a fixed size.

Question 11

Which method sets the text that's displayed when the user hovers over a JLabel?

Accepted Answer

A) setHover 
B) setHoverText 
C) setToolTip 
D) setToolTipText 
A) setHover 
B) setHoverText 
C) setToolTip 
D) setToolTipText

Question 12

Which of the following is the method used to display a dialog box to gather input?

Accepted Answer

A) showMessageDialog. 
B) getInput. 
C) inputDialog. 
D) showInputDialog. 
A) showMessageDialog. 
B) getInput. 
C) inputDialog. 
D) showInputDialog.

Question 13

The BorderLayout layout manager:

Accepted Answer

A) divides an area into five regions: NORTH,SOUTH,EAST,WEST and CENTER. 
B) divides an area into five regions: UP,DOWN,LEFT,RIGHT and MIDDLE. 
C) orders components vertically. 
D) order components horizontally. 
A) divides an area into five regions: NORTH,SOUTH,EAST,WEST and CENTER. 
B) divides an area into five regions: UP,DOWN,LEFT,RIGHT and MIDDLE. 
C) orders components vertically. 
D) order components horizontally.

Question 14

Which of the following is a MouseMotionListener method?

Accepted Answer

A) mousePressed. 
B) mouseExited. 
C) mouseDragged. 
D) mouseClicked. 
A) mousePressed. 
B) mouseExited. 
C) mouseDragged. 
D) mouseClicked.

Question 15

Which region is used by default when a Component is added to a BorderLayout?

Accepted Answer

A) NORTH 
B) CENTER 
C) WEST 
D) LEFT 
A) NORTH 
B) CENTER 
C) WEST 
D) LEFT

Question 16

When a component is ,paintComponent clears the component's background before the component is displayed.

Accepted Answer

A) transparent 
B) opaque 
C) oblique 
D) concave 
A) transparent 
B) opaque 
C) oblique 
D) concave

Question 17

Which of the following most completely describes the steps for setting up event handling for a GUI component?

Accepted Answer

A) Create a class that represents the event handler,attach the JFrame to a JWindow object and register the event handler. 
B) Implement an appropriate event-listener interface and register the event handler. 
C) Create a class that represents the event handler and implement an appropriate event-listener interface. 
D) Create a class that represents the event handler,implement an appropriate event-listener interface and register the event handler. 
A) Create a class that represents the event handler,attach the JFrame to a JWindow object and register the event handler. 
B) Implement an appropriate event-listener interface and register the event handler. 
C) Create a class that represents the event handler and implement an appropriate event-listener interface. 
D) Create a class that represents the event handler,implement an appropriate event-listener interface and register the event handler.

Question 18

Which of the following expressions creates a JLabel that displays the text "Here is what I look like!" The JLabel should display Icon object face,and the JLabel's contents should be left aligned.

Accepted Answer

A) new JLabel("Here is what I look like!",face,SwingConstants.LEFT) 
B) new JLabel("Here is what I look like!",face,SwingJustification.LEFT) 
C) new JLabel("Here is what I look like!",SwingConstants.LEFT,face) 
D) new JLabel("Here is what I look like!",SwingJustification.LEFT,face) 
A) new JLabel("Here is what I look like!",face,SwingConstants.LEFT) 
B) new JLabel("Here is what I look like!",face,SwingJustification.LEFT) 
C) new JLabel("Here is what I look like!",SwingConstants.LEFT,face) 
D) new JLabel("Here is what I look like!",SwingJustification.LEFT,face)

Question 19

Which of the following statements about adapters is false?

Accepted Answer

A) An adapter class implements an interface. 
B) An adapter class provides a default (empty)implementation of every method in the interface. 
C) Programmers override selected adapter methods. 
D) A ComponentListener is a ComponentAdaptor. 
A) An adapter class implements an interface. 
B) An adapter class provides a default (empty)implementation of every method in the interface. 
C) Programmers override selected adapter methods. 
D) A ComponentListener is a ComponentAdaptor.

Question 20

Method getSelectedIndex of class JComboBox returns:

Accepted Answer

A) the index of the selected item in the JComboBox. 
B) the selected item in the JComboBox,as a String. 
C) the index of the previously selected item. 
D) None of the above. 
A) the index of the selected item in the JComboBox. 
B) the selected item in the JComboBox,as a String. 
C) the index of the previously selected item. 
D) None of the above.

Exam 12: Gui Components: Part 1

Which of the following statements for a JTextField is false?

Which of the following objects cannot trap mouse events?

Some common lightweight component features supported by JComponent include:

Which JFrame constant indicates that the program should terminate when the window is closed by the user?

Which method determines if a JCheckBox is selected?

Together,the appearance and the way in which the user interacts with the application are known as that application's ________.

How many event-listener interfaces correspond to each event type?

Which of the following does not generate GUI events?

Each container can have ________.

Which of the following statements about JPanels is false?

Which method sets the text that's displayed when the user hovers over a JLabel?

Which of the following is the method used to display a dialog box to gather input?

The BorderLayout layout manager:

Which of the following is a MouseMotionListener method?

Which region is used by default when a Component is added to a BorderLayout?

When a component is ,paintComponent clears the component's background before the component is displayed.

Which of the following most completely describes the steps for setting up event handling for a GUI component?

Which of the following expressions creates a JLabel that displays the text "Here is what I look like!" The JLabel should display Icon object face,and the JLabel's contents should be left aligned.

Which of the following statements about adapters is false?

Method getSelectedIndex of class JComboBox returns:

Introduction to Computers and Java

Introduction to Java Applications

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Graphics and Java 2D

Strings

Files,streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

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