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

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. A

Question 3

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. C

Question 4

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 5

The Shift key is a(n) key.

Accepted Answer

A)  modifier 
B)  action 
C)  output 
D)  None of the above 
A)  modifier 
B)  action 
C)  output 
D)  None of the above

Question 6

Which component contains menus?

Accepted Answer

A)  Menu button. 
B)  Title bar. 
C)  Menu bar. 
D)  Combo box. 
A)  Menu button. 
B)  Title bar. 
C)  Menu bar. 
D)  Combo box.

Question 7

FlowLayout method changes the alignment for the FlowLayout.

Accepted Answer

A)  setLayout 
B)  modifyAlignment 
C)  setAlignment 
D)  setAlign 
A)  setLayout 
B)  modifyAlignment 
C)  setAlignment 
D)  setAlign

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

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 10

When the user clicks a JCheckBox, a(n) occurs.

Accepted Answer

A)  CheckedEvent 
B)  ButtonEvent 
C)  ItemEvent 
D)  ActionEvent 
A)  CheckedEvent 
B)  ButtonEvent 
C)  ItemEvent 
D)  ActionEvent

Question 11

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 12

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 13

Which methods can be used to change the scrollbar policies?

Accepted Answer

A)  setHoizontalPolicy, setVerticalPolicy. 
B)  setHorizontal, setVertical. 
C)  setHPolicy, setVPolicy. 
D)  setHorizontalScrollBarPolicy, setVerticalScrollBarPolicy. 
A)  setHoizontalPolicy, setVerticalPolicy. 
B)  setHorizontal, setVertical. 
C)  setHPolicy, setVPolicy. 
D)  setHorizontalScrollBarPolicy, setVerticalScrollBarPolicy.

Question 14

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 15

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 16

Adding a ButtonGroup object to a container ________.

Accepted Answer

A)  is necessary for the functionality of the ButtonGroup to work properly. 
B)  causes all the JRadioButtons in the group to have their event handlers registered. 
C)  results in a compilation error. 
D)  None of the above. 
A)  is necessary for the functionality of the ButtonGroup to work properly. 
B)  causes all the JRadioButtons in the group to have their event handlers registered. 
C)  results in a compilation error. 
D)  None of the above.

Question 17

Which of the following is not a KeyListener method?

Accepted Answer

A)  keyPressed. 
B)  keyReleased. 
C)  keyClicked. 
D)  keyTyped. 
A)  keyPressed. 
B)  keyReleased. 
C)  keyClicked. 
D)  keyTyped.

Question 18

By default JScrollPane ________.

Accepted Answer

A)  always displays scrollbars 
B)  never displays scrollbars 
C)  only displays scrollbars if they are needed 
D)  None of the above 
A)  always displays scrollbars 
B)  never displays scrollbars 
C)  only displays scrollbars if they are needed 
D)  None of the above

Question 19

A 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 20

Consider the list below:
January
February
March
April
May
June
July
August
September
October
November
December
What type of JList selection mode would allow the user to select March, June and July in one step?

Accepted Answer

A)  SINGLE_SELECTION. 
B)  SINGLE_INTERVAL_SELECTION. 
C)  MULTIPLE_INTERVAL_SELECTION. 
D)  All of the above. 
A)  SINGLE_SELECTION. 
B)  SINGLE_INTERVAL_SELECTION. 
C)  MULTIPLE_INTERVAL_SELECTION. 
D)  All of the above.

Exam 12: Gui Components

Which of the following statements for a JTextField is false?

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 a MouseMotionListener method?

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

The Shift key is a(n) key.

Which component contains menus?

FlowLayout method changes the alignment for the FlowLayout.

The BorderLayout layout manager:

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

When the user clicks a JCheckBox, a(n) occurs.

A JScrollPane is provided automatically for which of the following?

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

Which methods can be used to change the scrollbar policies?

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

Method getSelectedValues of class JList returns:

Adding a ButtonGroup object to a container ________.

Which of the following is not a KeyListener method?

By default JScrollPane ________.

A JLabel can be attached to a JFrame using method ________.

Consider the list below: January February March April May June July August September October November December What type of JList selection mode would allow the user to select March, June and July in one step?

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