Deck 13: Applets and More

Question 1

Web pages are normally written in

A) Hypertext Markup Language (HTML).
B) Extensible Markup Language (XML).
C) Standard Generalized Markup Language (SGML).
D) Generalized Markup Language (GML).

Answer 1

A

Question 2

To make a Web page, you create a text file that contains HTML instructions, which are known as ________, as well as the text that should be displayed on the Web page.

A) markups
B) hypertext
C) labels
D) tags

Answer 2

D

Question 3

To run an applet, you create an HTML document with a(n) ________ tag.

A) script
B) applet
C) java
D) base

Answer 3

B

Question 4

The HTML tag that is used to insert a link has the following general format:

A) Text.
B) Text.
C) Text.
D) Text.

Question 5

The names of the AWT classes are the same as those of the Swing classes, except the AWT class names do not start with this letter.

A) J
B) X
C) S
D) A

Question 6

Which of the following is one way to get a reference to the Graphics object for an AWT component or a class that extends JApplet or JFrame?

A) Override the component's paint method.
B) Create a static instance of the Graphics object.
C) Pass an instance of the Graphics object as an argument to the component's constructor.
D) Create an instance of any class that extends the Graphics2D class.

Question 7

Applets run in a restricted environment to

A) allow the Web browser to communicate with the Web server.
B) prevent malicious code from attacking or spying on unsuspecting users.
C) execute operating system procedures on the user's system.
D) extend the capabilities of a Web page.

Question 8

Each component has an internal object that inherits from this class, which has numerous methods for drawing graphical shapes on the surface of the component.

A) Frame
B) Graphics
C) Panel
D) Shape

Question 9

Which of the following statements is correct regarding the line break
, paragraph break

, and horizontal rule

---

HTML tags.

A) These tags are unique from other tags because they do not occur in pairs.
B) These tags are used to create breaks in an HTML document's text.
C) When you use one of these tags, you insert only an opening tag.
D) All of the above

Question 10

These are Java programs that are usually part of a Web site.

A) classes
B) applications
C) applets
D) Web services

Question 11

For all Swing components except JApplet and JFrame, you should override this method to get a reference to the component's Graphics object.

A) paintComponent
B) paint
C) paintBase
D) repaint

Question 12

An applet class has a method named ________ that performs the same operations as a constructor.

A) init
B) enable
C) add
D) windowInit

Question 13

Which of the following statements would you write in an HTML document to display the text "History" as a level one header?

A)

History

B)
C)

History

D) History

Question 14

When you draw a line or shape on a component, you must indicate its position using these.

A) X and Y coordinates
B) polar coordinates
C) line elements
D) quadrants and octants

Question 15

An HTML document is usually saved with this file name extension.

A) )xml
B) )html
C) )asp
D) )cfm

Question 16

An applet class inherits from this class.

A) JWindow
B) JViewport
C) JFrame
D) JApplet

Question 17

The point where two line segments are connected is called a

A) polygon.
B) cell.
C) vertex.
D) normal.

Question 18

In addition to displaying standard components such as buttons and labels, Java allows you to draw which of the following?

A) ovals
B) rectangles
C) arcs
D) All of the above

Question 19

This method draws a string as a graphic.

A) displayString
B) stringDraw
C) paintString
D) drawString

Question 20

The coordinates of the pixel in the upper-left corner of a component are usually

A) (1, 1).
B) (0, 0).
C) (-1, -1).
D) (100, 100).

Question 21

Java provides a(n) ________ class for all of the interfaces in the API that have more than one method.

A) converter
B) super
C) adapter
D) general

Question 22

In HTML, the

tag marks a document's head section, whereas the tag marks a header, which is large bold text.

Question 23

This method causes the Timer object to start generating action events.

A) start
B) go
C) tick
D) begin

Question 24

An applet does not have to be on a Web server in order to be executed.

Question 25

This method clears the surface of the component and then calls the paint method.

A) resurface
B) clear
C) repaint
D) refresh

Question 26

Once you create a mouse listener class, you can register it with a component using this method, which is inherited from the Component class.

A) addMouseListener
B) getMouseListenerEvent
C) initMouseListener
D) addMouseListenerEvent

Question 27

The mouse generates two types of events: mouse events and mouse motion events.

Question 28

When you update the data used to draw shapes on a component, you must call the repaint method to force a call to the paint or paintComponent methods.

Question 29

If you need to load a sound file to be played multiple times, you should use this object.

A) Album
B) Track
C) SoundByte
D) AudioClip

Question 30

If you want to make sure that an applet is compatible with all Java-enabled browsers, use AWT components instead of Swing.

Question 31

A mouse motion listener class must implement the MouseMotionListener interface, which is in this package.

A) javax.swing
B) java.awt.event
C) java.awt
D) java.lang

Question 32

Instead of displaying its own window, an applet appears in the browser's window.

Question 33

These classes implement the MouseListener and MouseMotionListener interfaces and provide empty definitions for all of the required methods.

A) MouseAdapter and MouseMotionAdapter
B) MouseTemplate and MouseMotionTemplate
C) MouseInterface and MouseMotionInterface
D) MouseBase and MouseMotionBase

Question 34

HTML has sophisticated abilities such as performing math calculations and interacting with the user.

Question 35

Applets are important because they can be used to extend the capabilities of a stand-alone Java application.

Question 36

The Applet class's ________ method loads a sound file, plays it one time, and then releases it for garbage collection.

A) load
B) play
C) sample
D) getSound

Question 37

There is no static main method needed to create an instance of the applet class because the browser creates an instance of the class automatically.

Question 38

A mouse listener class must implement this interface, which is in the java.awt.event package.

A) MouseEvent
B) MouseListener
C) MouseAction
D) MouseInterface

Question 39

An application can use this object to execute code automatically at regular time intervals.

A) Clock
B) Regulator
C) Meter
D) Timer

Question 40

A Timer object does not begin generating action events until it is started with a call to its getDelay method.