Question 1

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. D

Question 2

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 3

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. D

Question 4

A JScrollPane is provided automatically for which of the following?

Accepted Answer

A)  JToggleButton. 
B)  JRadioButton. 
C)  JList. 
D)  None of the above. 
A)  JToggleButton. 
B)  JRadioButton. 
C)  JList. 
D)  None of the above.

Question 5

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 6

Method _____________-can be used to set the layout manager of a container.

Accepted Answer

A)  setManager 
B)  setLayout 
C)  setLayoutManager 
D)  setGUILayout 
A)  setManager 
B)  setLayout 
C)  setLayoutManager 
D)  setGUILayout

Question 7

Method getSelectedValues of class JList returns:

Accepted Answer

A)  an array of ints representing the indices of the selected items. 
B)  an array of doubles representing the indices of the selected items. 
C)  an array of Strings representing the selected items. 
D)  an array of Objects representing the selected items. 
A)  an array of ints representing the indices of the selected items. 
B)  an array of doubles representing the indices of the selected items. 
C)  an array of Strings representing the selected items. 
D)  an array of Objects representing the selected items.

Question 8

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 9

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 10

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 11

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 12

Which MouseEvent method can be used to determine if the Alt key is pressed?

Accepted Answer

A)  isAltPressed. 
B)  isAltDown. 
C)  getClickCount. 
D)  AltPressed. 
A)  isAltPressed. 
B)  isAltDown. 
C)  getClickCount. 
D)  AltPressed.

Question 13

JLabel can be attached to a JFrame using method ________.

Accepted Answer

A)  attach 
B)  contain 
C)  append 
D)  add 
A)  attach 
B)  contain 
C)  append 
D)  add

Question 14

The setMaximumRowCount method is used for:

Accepted Answer

A)  Button. 
B)  JComboBox. 
C)  JRadioButton. 
D)  JToggleButton. 
A)  Button. 
B)  JComboBox. 
C)  JRadioButton. 
D)  JToggleButton.

Question 15

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 16

Which layout manager is the default for JFrame?

Accepted Answer

A)  FlowLayout 
B)  BorderLayout 
C)  GridLayout 
D)  None of the above 
A)  FlowLayout 
B)  BorderLayout 
C)  GridLayout 
D)  None of the above

Question 17

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 18

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.

Question 19

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 20

Class Point represents ________.

Accepted Answer

A)  a filled oval 
B)  an x-y coordinate pair 
C)  an object used to draw 
D)  a period in a sentence 
A)  a filled oval 
B)  an x-y coordinate pair 
C)  an object used to draw 
D)  a period in a sentence

Exam 24: Swing Gui Components

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

Some common lightweight component features supported by JComponent include:

When the arrow on a JComboBox is clicked:

A JScrollPane is provided automatically for which of the following?

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

Method _____________-can be used to set the layout manager of a container.

Method getSelectedValues of class JList returns:

The BorderLayout layout manager:

In what cases are adapter classes useful?

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

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

Which MouseEvent method can be used to determine if the Alt key is pressed?

JLabel can be attached to a JFrame using method ________.

The setMaximumRowCount method is used for:

Which of the following statements about a JLabel is false?

Which layout manager is the default for JFrame?

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

Which of the following statements for a JTextField is false?

Which of the following does not generate GUI events?

Class Point represents ________.

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