Question 1

Given the declaration, Integer num; The statement num = 8; is known as autoboxing of int type.

Accepted Answer

A) True 
 B)False  True

Question 2

When you click a JButton, an event, known as an action event, is created.

Accepted Answer

A) True 
 B)False  True

Question 3

The class Container is included in the package java.awt.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following is NOT a required attribute of a window?

Accepted Answer

A)  title 
B)  width 
C)  height 
D)  color 
A)  title 
B)  width 
C)  height 
D)  color

Question 5

If lengthTF is a JTextField and pane is a container, then the statement pane.add(lengthTF); adds the text field to the content pane of a window.

Accepted Answer

A) True 
 B)False

Question 6

Wrapper class objects are mutable.

Accepted Answer

A) True 
 B)False

Question 7

What is the name for Java classes that are provided so that values of primitive data types can be treated as objects?

Accepted Answer

A)  interfaces 
B)  extensions 
C)  wrappers 
D)  event handlers 
A)  interfaces 
B)  extensions 
C)  wrappers 
D)  event handlers

Question 8

Which of the following statements is NOT true about GUI programs?

Accepted Answer

A)  Every GUI program requires a window. 
B)  Every window has a title, width, and height. 
C)  All components are added directly to the GUI window. 
D)  A layout must be created before components can be added to a content pane. 
A)  Every GUI program requires a window. 
B)  Every window has a title, width, and height. 
C)  All components are added directly to the GUI window. 
D)  A layout must be created before components can be added to a content pane.

Question 9

In Java, extends is a reserved word.

Accepted Answer

A) True 
 B)False

Question 10

To determine whether two reference variables of the Integer type point to the same Integer object, we can use either the method equals of the class Integer or the operator ==.

Accepted Answer

A) True 
 B)False

Question 11

An interface is a class that contains only the method headings and each method heading is terminated with a semicolon.

Accepted Answer

A) True 
 B)False

Question 12

To compare the values of two Integer objects for equality, we can use the method equals of the class Integer.

Accepted Answer

A) True 
 B)False

Question 13

Which package will you most likely have to import in order to write a GUI program?

Accepted Answer

A)  java.awt.* 
B)  java.io.* 
C)  java.text.* 
D)  java.net.* 
A)  java.awt.* 
B)  java.io.* 
C)  java.text.* 
D)  java.net.*

Question 14

In Java, there is one way to make an application program create a window.

Accepted Answer

A) True 
 B)False

Question 15

To create a window, which of the following classes has to be extended?

Accepted Answer

A)  Container 
B)  JFrame 
C)  JButton 
D)  JTextField 
A)  Container 
B)  JFrame 
C)  JButton 
D)  JTextField

Question 16

Which method is used to register a listener object to a button object?

Accepted Answer

A)  addActionListener 
B)  registerButton 
C)  eventButton 
D)  buttonListener 
A)  addActionListener 
B)  registerButton 
C)  eventButton 
D)  buttonListener

Question 17

Which of the following methods is NOT part of the class JFrame?

Accepted Answer

A)  setVisible 
B)  setSize 
C)  setTitle 
D)  getText 
A)  setVisible 
B)  setSize 
C)  setTitle 
D)  getText

Question 18

Which of the following is not a method of the class JTextField?

Accepted Answer

A)  setText 
B)  setEditable 
C)  addActionListener 
D)  setVisible 
A)  setText 
B)  setEditable 
C)  addActionListener 
D)  setVisible

Question 19

Which modifier is used to build classes on top of classes that are interfaces?

Accepted Answer

A)  private 
B)  public 
C)  new 
D)  implements 
A)  private 
B)  public 
C)  new 
D)  implements

Question 20

The method addWindowListener is included in the class JFrame.

Accepted Answer

A) True 
 B)False

Given the declaration, Integer num; The statement num = 8; is known as autoboxing of int type.

When you click a JButton, an event, known as an action event, is created.

The class Container is included in the package java.awt.

Which of the following is NOT a required attribute of a window?

If lengthTF is a JTextField and pane is a container, then the statement pane.add(lengthTF); adds the text field to the content pane of a window.

Wrapper class objects are mutable.

What is the name for Java classes that are provided so that values of primitive data types can be treated as objects?

Which of the following statements is NOT true about GUI programs?

In Java, extends is a reserved word.

To determine whether two reference variables of the Integer type point to the same Integer object, we can use either the method equals of the class Integer or the operator ==.

An interface is a class that contains only the method headings and each method heading is terminated with a semicolon.

To compare the values of two Integer objects for equality, we can use the method equals of the class Integer.

Which package will you most likely have to import in order to write a GUI program?

In Java, there is one way to make an application program create a window.

To create a window, which of the following classes has to be extended?

Which method is used to register a listener object to a button object?

Which of the following methods is NOT part of the class JFrame?

Which of the following is not a method of the class JTextField?

Which modifier is used to build classes on top of classes that are interfaces?

The method addWindowListener is included in the class JFrame.

An Overview of Computers and Programming Languages

Basic Elements of Java

Introduction to Objects and Input/output

Control Structures I: Selection

Control Structures II: Repetition

User-Defined Methods

User-Defined Classes

Arrays

Inheritance and Polymorphism

Handling Exceptions and Events

Advanced Guis and Graphics

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters

Exam 6: Graphical User Interface GUI and Object-Oriented Design OOD

Given the declaration, Integer num; The statement num = 8; is known as autoboxing of int type.

When you click a JButton, an event, known as an action event, is created.

The class Container is included in the package java.awt.

Which of the following is NOT a required attribute of a window?

If lengthTF is a JTextField and pane is a container, then the statement pane.add(lengthTF); adds the text field to the content pane of a window.

Wrapper class objects are mutable.

What is the name for Java classes that are provided so that values of primitive data types can be treated as objects?

Which of the following statements is NOT true about GUI programs?

In Java, extends is a reserved word.

To determine whether two reference variables of the Integer type point to the same Integer object, we can use either the method equals of the class Integer or the operator ==.

An interface is a class that contains only the method headings and each method heading is terminated with a semicolon.

To compare the values of two Integer objects for equality, we can use the method equals of the class Integer.

Which package will you most likely have to import in order to write a GUI program?

In Java, there is one way to make an application program create a window.

To create a window, which of the following classes has to be extended?

Which method is used to register a listener object to a button object?

Which of the following methods is NOT part of the class JFrame?

Which of the following is not a method of the class JTextField?

Which modifier is used to build classes on top of classes that are interfaces?

The method addWindowListener is included in the class JFrame.

An Overview of Computers and Programming Languages

Basic Elements of Java

Introduction to Objects and Input/output

Control Structures I: Selection

Control Structures II: Repetition

User-Defined Methods

User-Defined Classes

Arrays

Inheritance and Polymorphism

Handling Exceptions and Events

Advanced Guis and Graphics

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters