Question 1

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 2

When the arrow on a JComboBox is clicked:

Accepted Answer

A)  an ItemEvent occurs. 
B)  a scrollbar always appears. 
C)  an ActionEvent occurs. 
D)  The JComboBox expands to a list. 
A)  an ItemEvent occurs. 
B)  a scrollbar always appears. 
C)  an ActionEvent occurs. 
D)  The JComboBox expands to a list.

Question 3

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 4

Which of the following statements about heavyweight components is false?

Accepted Answer

A)  AWT components are not heavyweight components. 
B)  Several Swing components are heavyweight components. 
C)  The look-and-feel may vary across platforms. 
D)  The functionality may vary across platforms. 
A)  AWT components are not heavyweight components. 
B)  Several Swing components are heavyweight components. 
C)  The look-and-feel may vary across platforms. 
D)  The functionality may vary across platforms.

Question 5

Which of the following statements about Swing GUI components is false?

Accepted Answer

A)  Swing components are less portable but more flexible than the original Java GUI components from package java.awt. 
B)  Most Swing components are written completely in Java. 
C)  Swing components allow the user to specify a uniform look-and-feel across all platforms. 
D)  Swing components allow the user to change the look-and-feel while the program is running. 
A)  Swing components are less portable but more flexible than the original Java GUI components from package java.awt. 
B)  Most Swing components are written completely in Java. 
C)  Swing components allow the user to specify a uniform look-and-feel across all platforms. 
D)  Swing components allow the user to change the look-and-feel while the program is running.

Question 6

Which of the following is not necessary to use the event delegation model?

Accepted Answer

A)  An event listener must be registered. 
B)  An event handler must be implemented. 
C)  The appropriate interface must be implemented. 
D)  The appropriate interface must be registered. 
A)  An event listener must be registered. 
B)  An event handler must be implemented. 
C)  The appropriate interface must be implemented. 
D)  The appropriate interface must be registered.

Question 7

Which pair of words does not complete the sentence below correctly?
A ________ is a(n) ________.

Accepted Answer

A)  Container, Component. 
B)  Container, JPanel. 
C)  JComponent, Container. 
D)  Component, Object. 
A)  Container, Component. 
B)  Container, JPanel. 
C)  JComponent, Container. 
D)  Component, Object.

Question 8

The class GridLayout constructs to hold components.

Accepted Answer

A)  a horizontal grid with one row 
B)  a vertical grid with one column 
C)  a grid with multiple rows and columns 
D)  a square grid with the same number of rows as columns 
A)  a horizontal grid with one row 
B)  a vertical grid with one column 
C)  a grid with multiple rows and columns 
D)  a square grid with the same number of rows as columns

Question 9

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 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

JPasswordField contains method to obtain the data entered.

Accepted Answer

A)  getInput. 
B)  getPassword. 
C)  getText. 
D)  getEcho. 
A)  getInput. 
B)  getPassword. 
C)  getText. 
D)  getEcho.

Question 12

Which of the following completes the sentence below correctly?
A(n) is a(n) .

Accepted Answer

A)  InputEvent, MouseEvent. 
B)  ActionEvent, AdjustmentEvent. 
C)  FocusEvent, WindowEvent. 
D)  ContainerEvent, ComponentEvent. 
A)  InputEvent, MouseEvent. 
B)  ActionEvent, AdjustmentEvent. 
C)  FocusEvent, WindowEvent. 
D)  ContainerEvent, ComponentEvent.

Question 13

A MouseHandler object implements which two interfaces?

Accepted Answer

A)  MouseListener and MouseActionListener. 
B)  MouseListener and MouseMotionListener. 
C)  MouseListener and MouseEventListener. 
D)  MouseListener only. 
A)  MouseListener and MouseActionListener. 
B)  MouseListener and MouseMotionListener. 
C)  MouseListener and MouseEventListener. 
D)  MouseListener only.

Question 14

Which of the following statements about a JLabel is false?

Accepted Answer

A)  Applications rarely change a label's contents after creating it. 
B)  A JLabel can display text and an image. 
C)  A JLabel can display text and a button. 
D)  A JLabel is a subclass of JComponent. 
A)  Applications rarely change a label's contents after creating it. 
B)  A JLabel can display text and an image. 
C)  A JLabel can display text and a button. 
D)  A JLabel is a subclass of JComponent.

Question 15

In what cases are adapter classes useful?

Accepted Answer

A)  When an adapter GUI control is clicked. 
B)  When every method in the event-listener interface is to use the same functionality. 
C)  When it is not desirable to declare every method in the event-listener interface. 
D)  None of the above. 
A)  When an adapter GUI control is clicked. 
B)  When every method in the event-listener interface is to use the same functionality. 
C)  When it is not desirable to declare every method in the event-listener interface. 
D)  None of the above.

Question 16

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.

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

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 19

BorderLayout implements interface ________.

Accepted Answer

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

Question 20

9 Q3: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.

Exam 12: Gui Components

FlowLayout is ________.

When the arrow on a JComboBox is clicked:

Which of the following statements about adapters is false?

Which of the following statements about heavyweight components is false?

Which of the following statements about Swing GUI components is false?

Which of the following is not necessary to use the event delegation model?

Which pair of words does not complete the sentence below correctly? A ________ is a(n) ________.

The class GridLayout constructs to hold components.

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

Which of the following statements about JPanels is false?

JPasswordField contains method to obtain the data entered.

Which of the following completes the sentence below correctly? A(n) is a(n) .

A MouseHandler object implements which two interfaces?

Which of the following statements about a JLabel is false?

In what cases are adapter classes useful?

Which of the following objects cannot trap mouse events?

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

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.

BorderLayout implements interface ________.

9 Q3:Which of the following is not a type of button?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Arrays and Arraylists

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Graphics and Java 2D

Fundamentals of Characters and Strings

Files, Streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters

Which pair of words does not complete the sentence below correctly? A is a(n) .