Question 1

Which of the following is not a GUI component (control or widget)?

Accepted Answer

A)  String. 
B)  Button. 
C)  Menu. 
D)  Combo box. 
A)  String. 
B)  Button. 
C)  Menu. 
D)  Combo box.

Question 2

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 3

Which of the following is stateless?

Accepted Answer

A)  JButton. 
B)  JToggleButton. 
C)  JRadioButton. 
D)  JCheckBox. 
A)  JButton. 
B)  JToggleButton. 
C)  JRadioButton. 
D)  JCheckBox.

Question 4

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 5

Using layout managers ________.

Accepted Answer

A)  provides the greatest level of control over a GUI's appearance 
B)  can be faster than creating a GUI with absolute positioning 
C)  allows the programmer to specify the exact location of each GUI component with respect to the upper-left corner of the Container 
D)  allows the programmer to specify the exact location of each GUI component with respect to the lower-left corner of the Container 
A)  provides the greatest level of control over a GUI's appearance 
B)  can be faster than creating a GUI with absolute positioning 
C)  allows the programmer to specify the exact location of each GUI component with respect to the upper-left corner of the Container 
D)  allows the programmer to specify the exact location of each GUI component with respect to the lower-left corner of the Container

Question 6

When the user presses Enter in a JPasswordField, the GUI component generates an_______ , which is processed by an object that implements the interface___________ .

Accepted Answer

A)  ActionEvent, ActionListener. 
B)  ActionEvent, ActionEventListener. 
C)  TextEvent, TextListener. 
D)  TextEvent, TextEventListener. 
A)  ActionEvent, ActionListener. 
B)  ActionEvent, ActionEventListener. 
C)  TextEvent, TextListener. 
D)  TextEvent, TextEventListener.

Question 7

Which of the following is not a type of button?

Accepted Answer

A)  command buttons. 
B)  toggle buttons. 
C)  check boxes. 
D)  All of the above are types of buttons. 
A)  command buttons. 
B)  toggle buttons. 
C)  check boxes. 
D)  All of the above are types of buttons.

Question 8

Which of the following answers does not complete the sentence correctly? An anonymous inner class__________ .

Accepted Answer

A)  is frequently used for GUI event handling 
B)  is non-static 
C)  does not need a handle to its outer class to access its methods and variables 
D)  cannot be declared private 
A)  is frequently used for GUI event handling 
B)  is non-static 
C)  does not need a handle to its outer class to access its methods and variables 
D)  cannot be declared private

Question 9

BorderLayout implements interface ________.

Accepted Answer

A)  ActionListener 
B)  FlowLayout. 
C)  Layout 
D)  LayoutManager2 
A)  ActionListener 
B)  FlowLayout. 
C)  Layout 
D)  LayoutManager2

Question 10

When components are added to a container with a GridLayout, the component ________.

Accepted Answer

A)  fills the next spot in the row, continuing in the first position of the next row if the current row is full 
B)  fills the next spot in the column, continuing in the first position of the next column if the column is full 
C)  fills in row x, column y if x and y are two integers passed to the Container method add 
D)  fills in a random empty position in the grid 
A)  fills the next spot in the row, continuing in the first position of the next row if the current row is full 
B)  fills the next spot in the column, continuing in the first position of the next column if the column is full 
C)  fills in row x, column y if x and y are two integers passed to the Container method add 
D)  fills in a random empty position in the grid

Question 11

Method paintComponent is called when:

Accepted Answer

A)  a lightweight Swing component is created. 
B)  a lightweight Swing component is displayed. 
C)  a lightweight Swing component is clicked. 
D)  an application exits. 
A)  a lightweight Swing component is created. 
B)  a lightweight Swing component is displayed. 
C)  a lightweight Swing component is clicked. 
D)  an application exits.

Question 12

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 13

Forgetting to register an event-handler object for a particular GUI component's event type causes ___________.

Accepted Answer

A)  events of that type to be ignored. 
B)  all of the GUI component's events to be ignored. 
C)  a compilation error. 
D)  None of the above. 
A)  events of that type to be ignored. 
B)  all of the GUI component's events to be ignored. 
C)  a compilation error. 
D)  None of the above.

Question 14

Every JComponent has an instance variable called ____that enables the object to maintain references to all its registered listeners.

Accepted Answer

A)  registeredListenerList 
B)  listenerList 
C)  registeredList 
D)  eventListenerList 
A)  registeredListenerList 
B)  listenerList 
C)  registeredList 
D)  eventListenerList

Question 15

FlowLayout is ________.

Accepted Answer

A)  an abstract class 
B)  a way of organizing components vertically 
C)  the simplest layout manager 
D)  left-aligned by default 
A)  an abstract class 
B)  a way of organizing components vertically 
C)  the simplest layout manager 
D)  left-aligned by default

Question 16

__________Provides the basic attributes and behaviors of a window-a title bar at the top of the window, and buttons to minimize, maximize and close the window.

Accepted Answer

A)  JLabel. 
B)  JFrame. 
C)  JSwing. 
D)  JWindowControl. 
A)  JLabel. 
B)  JFrame. 
C)  JSwing. 
D)  JWindowControl.

Question 17

The text "Hello there, my friend." is an example of what type of capitalization?

Accepted Answer

A)  sentence-style capitalization. 
B)  book-title capitalization. 
C)  Neither of the above. 
D)  Both of the above. 
A)  sentence-style capitalization. 
B)  book-title capitalization. 
C)  Neither of the above. 
D)  Both of the above.

Question 18

Selecting a JList item generates ________.

Accepted Answer

A)  an ActionEvent 
B)  a ListItemEvent 
C)  a ListSelectionEvent 
D)  a ListSelectionItemEvent 
A)  an ActionEvent 
B)  a ListItemEvent 
C)  a ListSelectionEvent 
D)  a ListSelectionItemEvent

Question 19

The logical relationship between radio buttons is maintained by objects of what class?

Accepted Answer

A)  MutualExclusionGroup 
B)  RadioButtonGroup 
C)  Group 
D)  ButtonGroup 
A)  MutualExclusionGroup 
B)  RadioButtonGroup 
C)  Group 
D)  ButtonGroup

Question 20

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.

Exam 24: Swing Gui Components

Which of the following is not a GUI component (control or widget)?

Which of the following statements about JPanels is false?

Which of the following is stateless?

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

Using layout managers ________.

When the user presses Enter in a JPasswordField, the GUI component generates an_______ , which is processed by an object that implements the interface___________ .

Which of the following is not a type of button?

Which of the following answers does not complete the sentence correctly? An anonymous inner class__________ .

BorderLayout implements interface ________.

When components are added to a container with a GridLayout, the component ________.

Method paintComponent is called when:

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

Forgetting to register an event-handler object for a particular GUI component's event type causes ___________.

Every JComponent has an instance variable called ____that enables the object to maintain references to all its registered listeners.

FlowLayout is ________.

__________Provides the basic attributes and behaviors of a window-a title bar at the top of the window, and buttons to minimize, maximize and close the window.

The text "Hello there, my friend." is an example of what type of capitalization?

Selecting a JList item generates ________.

The logical relationship between radio buttons is maintained by objects of what class?

Which of the following is a MouseMotionListener method?

Introduction to Computers, the Internet and Java

Introduction to Java Applications; Inputoutput and Operators

Introduction to Classes, Objects, Methods and Strings

Control Statements: Assignment, and Operators

Control Statements: Logical Operators

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism and Interfaces

Exception Handling: a Deeper Look

Javafx Graphical User Interfaces

Javafx Gui

Strings, Characters and Regular Expressions

Files, Inputoutput Streams, Nio and Xml Serialization

Generic Collections

Lambdas and Streams

Recursion

Searching, Sorting and Big O

Generic Classes and Methods: a Deeper Look

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

Graphics and Java 2d

Networking

Java Persistence Api Jpa

Javaserver Faces Web Apps

Javaserver Faces Web Apps

Swing Gui Components

Filters

When the user presses Enter in a JPasswordField, the GUI component generates an_ , which is processed by an object that implements the interface_____ .