Question 1

The class JComponent is part of the package javax.swing.

Accepted Answer

A) True 
 B)False

Question 2

JRadioButtons are useful when you want to give the user the ability to select more than one of the presented options.

Accepted Answer

A) True 
 B)False

Question 3

JTextAreas can be used to display multiple lines of text.

Accepted Answer

A) True 
 B)False

Question 4

An applet invokes the methods start, init, stop, paint, and destroy in sequence.

Accepted Answer

A) True 
 B)False

Question 5

The graphic in the accompanying figure is an example of ____.

Accepted Answer

A)  check boxes 
B)  radio buttons 
C)  a combo box 
D)  a text area 
A)  check boxes 
B)  radio buttons 
C)  a combo box 
D)  a text area

Question 6

Which applet method is called by the Web browser to display the applet to the screen?

Accepted Answer

A)  drawApplet() 
B)  paint() 
C)  paintApplet() 
D)  setApplet() 
A)  drawApplet() 
B)  paint() 
C)  paintApplet() 
D)  setApplet()

Question 7

Applets do not have titles.

Accepted Answer

A) True 
 B)False

Question 8

You can create instances of Color by mixing red, green, and blue hues in various proportions.

Accepted Answer

A) True 
 B)False

Question 9

Given Graphics object g, what method call is used to draw a line from X = 10, Y = 20 to X = 80, Y = 40?

Accepted Answer

A)  g.drawLine(10, 80, 20, 40); 
B)  g.drawLine(10, 20, 80, 40); 
C)  g.drawLine(10, 20, 40, 80); 
D)  g.drawLine((10, 20), (80, 40)); 
A)  g.drawLine(10, 80, 20, 40); 
B)  g.drawLine(10, 20, 80, 40); 
C)  g.drawLine(10, 20, 40, 80); 
D)  g.drawLine((10, 20), (80, 40));

Question 10

Which of the following methods does the class JTextArea inherit from the class JTextComponent?

Accepted Answer

A)  setLineWrap() 
B)  setTabsize() 
C)  setColumns() 
D)  setText() 
A)  setLineWrap() 
B)  setTabsize() 
C)  setColumns() 
D)  setText()

Question 11

How many inches is 12-point font?

Accepted Answer

A)  1/6 
B)  1 
C)  6 
D)  72 
A)  1/6 
B)  1 
C)  6 
D)  72

Question 12

A JComboBox generates an ItemEvent.

Accepted Answer

A) True 
 B)False

Question 13

The paint method is used to get data from the user.

Accepted Answer

A) True 
 B)False

Question 14

To draw a rectangle filled with the current color, you can use the method ____.

Accepted Answer

A)  drawRect() 
B)  fillRect() 
C)  drawOval() 
D)  fillOval() 
A)  drawRect() 
B)  fillRect() 
C)  drawOval() 
D)  fillOval()

Question 15

What class must be extended when you create an applet?

Accepted Answer

A)  AWT 
B)  JDK 
C)  JApplet 
D)  Graphics 
A)  AWT 
B)  JDK 
C)  JApplet 
D)  Graphics

Question 16

You can close an applet by closing the HTML document in which the applet is embedded.

Accepted Answer

A) True 
 B)False

Question 17

Applets are embedded in ____ documents.

Accepted Answer

A)  HTTP 
B)  TCP 
C)  HTML 
D)  VRML 
A)  HTTP 
B)  TCP 
C)  HTML 
D)  VRML

Question 18

The class Graphics is an abstract class.

Accepted Answer

A) True 
 B)False

Question 19

Does an applet compile like any other Java application program?

Accepted Answer

A)  No -- applets do not produce a .class file because they don't have a main method. 
B)  Yes -- except the Web browser compiles the applet code. 
C)  Yes -- it is compiled as an application program and produces a .class file. 
D)  No -- applets are .applet files and not .java files. 
A)  No -- applets do not produce a .class file because they don't have a main method. 
B)  Yes -- except the Web browser compiles the applet code. 
C)  Yes -- it is compiled as an application program and produces a .class file. 
D)  No -- applets are .applet files and not .java files.

Question 20

JCheckBox is a subclass of the abstract class ToggleButton.

Accepted Answer

A) True 
 B)False

The class JComponent is part of the package javax.swing.

JRadioButtons are useful when you want to give the user the ability to select more than one of the presented options.

JTextAreas can be used to display multiple lines of text.

An applet invokes the methods start, init, stop, paint, and destroy in sequence.

The graphic in the accompanying figure is an example of ____.

Which applet method is called by the Web browser to display the applet to the screen?

Applets do not have titles.

You can create instances of Color by mixing red, green, and blue hues in various proportions.

Given Graphics object g, what method call is used to draw a line from X = 10, Y = 20 to X = 80, Y = 40?

Which of the following methods does the class JTextArea inherit from the class JTextComponent?

How many inches is 12-point font?

A JComboBox generates an ItemEvent.

The paint method is used to get data from the user.

To draw a rectangle filled with the current color, you can use the method ____.

What class must be extended when you create an applet?

You can close an applet by closing the HTML document in which the applet is embedded.

Applets are embedded in ____ documents.

The class Graphics is an abstract class.

Does an applet compile like any other Java application program?

JCheckBox is a subclass of the abstract class ToggleButton.

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

Graphical User Interface GUI and Object-Oriented Design OOD

User-Defined Methods

User-Defined Classes

Arrays

Inheritance and Polymorphism

Handling Exceptions and Events

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters

Exam 12: Advanced Guis and Graphics

The class JComponent is part of the package javax.swing.

JRadioButtons are useful when you want to give the user the ability to select more than one of the presented options.

JTextAreas can be used to display multiple lines of text.

An applet invokes the methods start, init, stop, paint, and destroy in sequence.

The graphic in the accompanying figure is an example of ____.

Which applet method is called by the Web browser to display the applet to the screen?

Applets do not have titles.

You can create instances of Color by mixing red, green, and blue hues in various proportions.

Given Graphics object g, what method call is used to draw a line from X = 10, Y = 20 to X = 80, Y = 40?

Which of the following methods does the class JTextArea inherit from the class JTextComponent?

How many inches is 12-point font?

A JComboBox generates an ItemEvent.

The paint method is used to get data from the user.

To draw a rectangle filled with the current color, you can use the method ____.

What class must be extended when you create an applet?

You can close an applet by closing the HTML document in which the applet is embedded.

Applets are embedded in ____ documents.

The class Graphics is an abstract class.

Does an applet compile like any other Java application program?

JCheckBox is a subclass of the abstract class ToggleButton.

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

Graphical User Interface GUI and Object-Oriented Design OOD

User-Defined Methods

User-Defined Classes

Arrays

Inheritance and Polymorphism

Handling Exceptions and Events

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters