Question 1

A JTextArea:

Accepted Answer

A) provides a bounding box used for the layout of JTextFields. 
B) wraps lines by default. 
C) provides an area for manipulating multiple lines of text. 
D) provides scrollbars for JTextFields. 
A) provides a bounding box used for the layout of JTextFields. 
B) wraps lines by default. 
C) provides an area for manipulating multiple lines of text. 
D) provides scrollbars for JTextFields. C

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. D

Question 3

A JRadioButton is different from a JCheckBox in that .

Accepted Answer

A) a JRadioButton is a subclass of JToggleButton,JCheckBox is not. 
B) normally several JRadioButtons are grouped together and are mutually exclusive. 
C) a JRadioButton is a type of button,JCheckBox is not. 
D) a JRadioButton is a state button,JCheckBox is not. 
A) a JRadioButton is a subclass of JToggleButton,JCheckBox is not. 
B) normally several JRadioButtons are grouped together and are mutually exclusive. 
C) a JRadioButton is a type of button,JCheckBox is not. 
D) a JRadioButton is a state button,JCheckBox is not. B

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 statements about anonymous inner classes is false?

Accepted Answer

A) They are declared without a name. 
B) They typically appear inside a method declaration. 
C) They are declared with the anonymous keyword. 
D) They can access their top-level class's members. 
A) They are declared without a name. 
B) They typically appear inside a method declaration. 
C) They are declared with the anonymous keyword. 
D) They can access their top-level class's members.

Question 6

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 7

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 8

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 9

Class JTextArea's getSelectedText method:

Accepted Answer

A) returns the text in the JTextArea. 
B) returns the selected text in the JTextArea. 
C) displays only the selected text in the JTextArea. 
D) sets the selected text in the JTextArea. 
A) returns the text in the JTextArea. 
B) returns the selected text in the JTextArea. 
C) displays only the selected text in the JTextArea. 
D) sets the selected text in the JTextArea.

Question 10

Which methods retrieve and set the image that's displayed in a JLabel?

Accepted Answer

A) getIcon,setIcon. 
B) getResource,setResource. 
C) getText,setText. 
D) getImageIcon,setImageIcon. 
A) getIcon,setIcon. 
B) getResource,setResource. 
C) getText,setText. 
D) getImageIcon,setImageIcon.

Question 11

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 12

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 13

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 14

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 15

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 16

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 17

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 18

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 19

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 20

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.

Exam 14: Gui Components: Part 1

A JTextArea:

Which of the following statements about JPanels is false?

A JRadioButton is different from a JCheckBox in that .

A JScrollPane is provided automatically for which of the following?

Which of the following statements about anonymous inner classes is false?

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

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

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

Class JTextArea's getSelectedText method:

Which methods retrieve and set the image that's displayed in a JLabel?

Method getSelectedValues of class JList returns:

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

The Shift key is a(n) key.

Which of the following is not a KeyListener method?

Which of the following statements about heavyweight components is false?

The setMaximumRowCount method is used for:

Which component contains menus?

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

Which of the following statements for a JTextField is false?

Which of the following statements about adapters is false?

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

Atm Case Study,part 1: Object-Oriented Design With the Uml

Atm Case Study,part 2: Implementing an Object-Oriented Design

Graphics and Java 2d

Strings

Files,streams and Object Serialization

Recursion

Searching, Sorting and Big O

Generic Collections

Generic Classes and Methods

Custom Generic Data Structures

Applets and Java Web Start

Multimedia: Applets and Applications

Gui, Part 2

Multithreading

Networking

Accessing Databases With Jdbc

Java Server Faces Web Applications

Ajax-Enabled Jsf Web Applications

Web Services

Filters