Question 1

Which component can generate action events?
I JMenuBar
II JMenu
III JMenuItem

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  II and III 
A)  I 
B)  II 
C)  III 
D)  II and III

Question 2

Which of the following classes has a Boolean state that can be set or unset through the GUI?

Accepted Answer

A)  JCheckBox 
B)  JButton 
C)  ButtonGroup 
D)  JMenuItem 
A)  JCheckBox 
B)  JButton 
C)  ButtonGroup 
D)  JMenuItem

Question 3

What is the default layout manager of JPanel?

Accepted Answer

A)  FlowLayout 
B)  GridLayout 
C)  BoxLayout 
D)  GridBagLayout 
A)  FlowLayout 
B)  GridLayout 
C)  BoxLayout 
D)  GridBagLayout

Question 4

The event that is generated by a slider when its value changes is of type _____.

Accepted Answer

A)  ActionEvent 
B)  ChangeEvent 
C)  ItemEvent 
D)  MouseEvent 
A)  ActionEvent 
B)  ChangeEvent 
C)  ItemEvent 
D)  MouseEvent

Question 5

Which method can a program use to set the selected choice in a JComboBox?

Accepted Answer

A)  select 
B)  setChoice 
C)  setSelectedItem 
D)  The selection can only be set through the GUI by the user. 
A)  select 
B)  setChoice 
C)  setSelectedItem 
D)  The selection can only be set through the GUI by the user.

Question 6

A ____ is a combination of a list and a text field.

Accepted Answer

A)  radio button 
B)  combo box 
C)  check box 
D)  scroll bar 
A)  radio button 
B)  combo box 
C)  check box 
D)  scroll bar

Question 7

By default, a JPanel uses a _______ layout.

Accepted Answer

A)  border 
B)  flow 
C)  grid 
D)  grid bag 
A)  border 
B)  flow 
C)  grid 
D)  grid bag

Question 8

If a JPanel with a BorderLayout manager contains a single component that was added to the CENTER, which parts of the JPanel does the component fill?
I North
II South
III Center
IV West
V East

Accepted Answer

A)  I, II and III 
B)  II, IV an V 
C)  III, IV and V 
D)  I, II, III, IV and V 
A)  I, II and III 
B)  II, IV an V 
C)  III, IV and V 
D)  I, II, III, IV and V

Question 9

What type of object can be added into a JComboBox by the addItem method?

Accepted Answer

A)  Object 
B)  String 
C)  JRadioButton 
D)  any non-primitive type 
A)  Object 
B)  String 
C)  JRadioButton 
D)  any non-primitive type

Question 10

Which layout manager uses a grid so that each component will always be placed into an area of the same size?
I GridBagLayout
II BorderLayout
III GridLayout

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I and III 
A)  I 
B)  II 
C)  III 
D)  I and III

Question 11

Which layout manager places objects left-to-right, row by row into a fixed set of rows and columns?

Accepted Answer

A)  FlowLayout 
B)  BorderLayout 
C)  BoxLayout 
D)  GridLayout 
A)  FlowLayout 
B)  BorderLayout 
C)  BoxLayout 
D)  GridLayout

Question 12

What is the default layout manager of the content pane of a JFrame?

Accepted Answer

A)  FlowLayout 
B)  GridLayout 
C)  BoxLayout 
D)  BorderLayout 
A)  FlowLayout 
B)  GridLayout 
C)  BoxLayout 
D)  BorderLayout

Question 13

Insert the missing code in the following segment. The code intends to get the newly selected item from the combo box. JComboBox facenameCombo = new JComboBox();
String selectedString = __________________________;

Accepted Answer

A)  (String) facenameCombo.getSelected(); 
B)  (String) facenameCombo.getSelectedItem(); 
C)  (String) selectedString.getSelected(); 
D)  (String) selectedString.getSelectedItem(); 
A)  (String) facenameCombo.getSelected(); 
B)  (String) facenameCombo.getSelectedItem(); 
C)  (String) selectedString.getSelected(); 
D)  (String) selectedString.getSelectedItem();

Question 14

Which of the following methods returns the object that was selected in the JComboBox?

Accepted Answer

A)  getSelected 
B)  getItem 
C)  getChoice 
D)  getSelectedItem 
A)  getSelected 
B)  getItem 
C)  getChoice 
D)  getSelectedItem

Question 15

When the user selects a menu item, the menu item sends a(n) ___________________.

Accepted Answer

A)  ActionEvent 
B)  ChangeEvent 
C)  ItemEvent 
D)  MouseEvent 
A)  ActionEvent 
B)  ChangeEvent 
C)  ItemEvent 
D)  MouseEvent

Question 16

Based on the statement below, which of the following adds a title to the border? JPanel panel = new JPanel();

Accepted Answer

A)  panel.setBorder(new TitledBorder()); 
B)  panel.setBorder(new TitledBorder(new EtchedBorder(), "Size")); 
C)  panel.setBorder(new TitledBorder(new EtchedBorder())); 
D)  panel.setTitle("Size"); 
A)  panel.setBorder(new TitledBorder()); 
B)  panel.setBorder(new TitledBorder(new EtchedBorder(), "Size")); 
C)  panel.setBorder(new TitledBorder(new EtchedBorder())); 
D)  panel.setTitle("Size");

Question 17

Which layout manager places objects left-to-right, and creates a new row only if when the current row cannot accommodate another object?

Accepted Answer

A)  FlowLayout 
B)  BorderLayout 
C)  BoxLayout 
D)  GridLayout 
A)  FlowLayout 
B)  BorderLayout 
C)  BoxLayout 
D)  GridLayout

Question 18

What is the best way to discover the set of Swing components?

Accepted Answer

A)  Randomly drag them into a visual appllication with a GUI builder 
B)  Write code to instantiate each component one at a time 
C)  Read the documentation for Swing 
D)  Run the SwingSet demo included in the JDK, Java Development Kit 
A)  Randomly drag them into a visual appllication with a GUI builder 
B)  Write code to instantiate each component one at a time 
C)  Read the documentation for Swing 
D)  Run the SwingSet demo included in the JDK, Java Development Kit

Question 19

What is the best first step in picking the layout managers for a set of nested panels?

Accepted Answer

A)  use a single panel with a GridBagLayout manager 
B)  construct a set of JPanel objects 
C)  make a sketch of the layout 
D)  use multiple panels with FlowLayout managers 
A)  use a single panel with a GridBagLayout manager 
B)  construct a set of JPanel objects 
C)  make a sketch of the layout 
D)  use multiple panels with FlowLayout managers

Question 20

A complex GUI can be created with a set of nested panels. What should determine the components that go into a single panel?

Accepted Answer

A)  the type of components 
B)  the size of the components 
C)  the adjacency of the components 
D)  the names of the components 
A)  the type of components 
B)  the size of the components 
C)  the adjacency of the components 
D)  the names of the components

Exam 19: Graphical User Interfaces

Which component can generate action events? I JMenuBar II JMenu III JMenuItem

Which of the following classes has a Boolean state that can be set or unset through the GUI?

What is the default layout manager of JPanel?

The event that is generated by a slider when its value changes is of type _____.

Which method can a program use to set the selected choice in a JComboBox?

A ____ is a combination of a list and a text field.

By default, a JPanel uses a _______ layout.

If a JPanel with a BorderLayout manager contains a single component that was added to the CENTER, which parts of the JPanel does the component fill? I North II South III Center IV West V East

What type of object can be added into a JComboBox by the addItem method?

Which layout manager uses a grid so that each component will always be placed into an area of the same size? I GridBagLayout II BorderLayout III GridLayout

Which layout manager places objects left-to-right, row by row into a fixed set of rows and columns?

What is the default layout manager of the content pane of a JFrame?

Insert the missing code in the following segment. The code intends to get the newly selected item from the combo box. JComboBox facenameCombo = new JComboBox(); String selectedString = __________________________;

Which of the following methods returns the object that was selected in the JComboBox?

When the user selects a menu item, the menu item sends a(n) ___________________.

Based on the statement below, which of the following adds a title to the border? JPanel panel = new JPanel();

Which layout manager places objects left-to-right, and creates a new row only if when the current row cannot accommodate another object?

What is the best way to discover the set of Swing components?

What is the best first step in picking the layout managers for a set of nested panels?

A complex GUI can be created with a set of nested panels. What should determine the components that go into a single panel?

Introduction

Using Objects

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Streams and Binary Inputoutput

Multithreading

Internet Networking

Relational Databases

XML

Web Applications

Filters