Transcript Java Multimedia: Images, Animation, Audio and Video

Chapter 30 -- Java Multimedia: Images,
Animation, Audio and Video
Outline
30.1
30.2
30.3
30.4
30.5
30.6
30.7
30.8
Introduction
Loading, Displaying and Scaling Images
Loading and Playing Audio Clips
Animating a Series of Images
Animation Issues
Customizing Applets via the HTML param Tag
Image Maps
Internet and World Wide Web Resources
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Objectives
• In this chapter, you will learn:
– To understand how to get and display images.
– To be able to create animations from sequences of
images; to control animation speed and flicker.
– To be able to get, play, loop and stop sounds.
– To be able to monitor the loading of images with class
MediaTracker; to create image maps.
– To customize applets with the param tag.
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.1 Introduction
• Revolution in computer industry
– Before, computers used for high-speed calculations
– Now, data manipulation important
• Multimedia
– "sizzle" of Java - images, sound, video
– CDs, DVDs, video cards
– Demands extraordinary computing power
• Fast processors making multimedia possible
• Java
– Has built-in multimedia capabilities
• Most programming languages do not
– Develop powerful multimedia applications
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.2 Loading, Displaying and Scaling
Images
• Java Multimedia
– Graphics, images, animations, sounds, and video
• Begin with images
• Class Image (java.awt)
– Abstract class, cannot create an object directly
• Must request that an Image be loaded and returned to you
– Class Applet (superclass of JApplet) has this method
• getImage( imageLocation, filename );
• imageLocation - getDocumentBase() - URL (address)
of HTML file
• filename - Java supports .gif and .jpg (.jpeg)
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.2 Loading, Displaying and Scaling
Images (II)
• Displaying Images with drawImage
– Many overloaded versions
g.drawImage( myImage, x, y, ImageObserver );
• myImage - Image object
• x,y - coordinates to display image
• ImageObserver - object on which image is displayed
– Use "this" to indicate the applet
– Can be any object that implements ImageObserver
interface
– g.drawImage( myImage, x, y, width, height,
ImageObserver );
• width and height - dimensions of image (automatically scaled)
– getWidth(), getHeight() - return dimensions of applet
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.2 Loading, Displaying and Scaling
Images (III)
• Class ImageIcon
– Not an abstract class (can create objects)
– Example constructor
private ImageIcon myIcon;
myIcon = new ImageIcon( "myIcon.gif" );
• Displaying Icons with method paintIcon
myIcon.paintIcon( Component, Graphics, x, y )
– Component - Component object on which to display image
(this)
– Graphics - Graphics object used to render image (g)
– x, y - coordinates of Icon
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.2 Loading, Displaying and Scaling
Images (IV)
• Usage
– ImageIcons are simpler than Images
• Create objects directly
• No need for ImageObserver reference
– However, cannot scale ImageIcons
• Scaling
– Use ImageIcon method getImage
• Returns Image reference
• This can be used with drawImage and be scaled
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
1
// Fig. 30.1: LoadImageAndScale.java
2
// Load an image and display it in its original size
3
// and scale it to twice its original width and height.
4
// Load and display the same image as an ImageIcon.
5
import java.applet.Applet;
6
import java.awt.*;
7
import javax.swing.*;
8
public class LoadImageAndScale extends JApplet {
9
10
private Image logo1;
11
private ImageIcon logo2;
12
13
// load the image when the applet is loaded
14
public void init()
15
{
16
logo1 = getImage( getDocumentBase(), "logo.gif" );
17
logo2 = new ImageIcon( "logo.gif" );
18
} // end method init
19
20
// display the image
21
public void paint( Graphics g )
22
{
23
// draw the original image
24
g.drawImage( logo1, 0, 0, this );
25
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LoadImageAndScale.java (Part
1 of 2)
26
// draw the image scaled to fit the width of the applet
27
// and the height of the applet minus 120 pixels
28
g.drawImage( logo1, 0, 120,
29
getWidth(), getHeight() - 120, this );
30
31
// draw the icon using its paintIcon method
32
logo2.paintIcon( this, g, 180, 0 );
33
Outline
LoadImageAndScale.java (Part
2 of 2)
} // end method pain
34 } // end class LoadImageAndSacle
Program Output
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.3 Loading and Playing Audio Clips
• Audio clips
– Require speakers and a sound board
– Sound engine - plays audio clips
• Supports .au, .wav, .aif, .mid
• Java Media Framework supports additional formats
• Playing audio clips
– play method in Applet
– Plays clip once, marked for garbage collection when finished
play( location, soundFileName );
location - getDocumentBase (URL of HTML file)
play( soundURL );
soundURL - URL that contains location and filename of clip
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.3 Loading and Playing Audio Clips (II)
• Playing audio clips
– Method play from AudioClip interface
– More flexible than Applet method play
• Audio stored in program, can be reused
– getAudioClip
• Returns reference to an AudioClip
• Same format as Applet method play
– getAudioClip( location, filename )
– getAudioClip( soundURL )
– Once AudioClip loaded, use methods
• play - plays audio once
• loop - continuous loops audio in background
• stop - terminates clip that is currently playing
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
1
// Fig. 30.2: LoadAudioAndPlay.java
2
// Load an audio clip and play it.
3
import java.applet.*;
4
import java.awt.*;
5
import java.awt.event.*;
6
import javax.swing.*;
7
public class LoadAudioAndPlay extends JApplet {
8
9
private AudioClip sound1, sound2, currentSound;
10
private JButton playSound, loopSound, stopSound;
11
private JComboBox chooseSound;
12
13
// load the image when the applet begins executing
14
public void init()
15
{
16
Container c = getContentPane();
17
c.setLayout( new FlowLayout() );
18
19
String choices[] = { "Welcome", "Hi" };
20
chooseSound = new JComboBox( choices );
21
chooseSound.addItemListener(
22
new ItemListener() {
23
public void itemStateChanged( ItemEvent e )
24
{
25
currentSound.stop();
26
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LoadAudioAndPlay.
java (Part 1 of 3)
27
28
29
30
31
currentSound =
chooseSound.getSelectedIndex() == 0 ?
sound1 : sound2;
} // end method itemStateChanged
} // end anonymous inner class
32
); // end addItemListener
33
c.add( chooseSound );
34
35
ButtonHandler handler = new ButtonHandler();
36
playSound = new JButton( "Play" );
37
playSound.addActionListener( handler );
38
c.add( playSound );
39
loopSound = new JButton( "Loop" );
40
loopSound.addActionListener( handler );
41
c.add( loopSound );
42
stopSound = new JButton( "Stop" );
43
stopSound.addActionListener( handler );
44
c.add( stopSound );
45
46
47
48
49
50
51
sound1 = getAudioClip(
getDocumentBase(), "welcome.wav" );
sound2 = getAudioClip(
getDocumentBase(), "hi.au" );
currentSound = sound1;
} // end method init
52
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LoadAudioAndPlay.
java (Part 2 of 3)
53
// stop the sound when the user switches Web pages
54
// (i.e., be polite to the user)
55
public void stop()
56
{
57
58
currentSound.stop();
} // end method stop
59
60
private class ButtonHandler implements ActionListener {
61
public void actionPerformed( ActionEvent e )
62
{
63
64
65
66
67
68
if ( e.getSource() == playSound )
currentSound.play();
else if ( e.getSource() == loopSound )
currentSound.loop();
else if ( e.getSource() == stopSound )
currentSound.stop();
69
} // end method actionPerformed
70
} // end inner class ButtonHandler
71 } // end class LoadAudioAndPlay
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LoadAudioAndPlay.
java (Part 3 of 3)
Outline
Program Output
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.4 Animating a Series of Images
• Following example
– Use a series of images stored in an array
– Use same techniques to load and display ImageIcons
• Class Timer
– Generates ActionEvents at a fixed interval in milliseconds
Timer ( animationDelay, ActionListener );
ActionListener - ActionListener that will respond to
ActionEvents
– Methods
•
•
•
•
start
stop
restart
isRunning
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.4 Animating a Series of Images (II)
• Method repaint
– Calls update, which calls paintComponent
• Subclasses of JComponent should draw in method
paintComponent
• Call superclass's paintComponent to make sure Swing
components displayed properly
• View area
– Width and height specify entire window, not client area
– Dimension objects
• Contain width and height values
myDimObject = new Dimension( 100, 200 );
myDimObject.width
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.4 Animating a Series of Images (III)
• getImageLoadStatus
– ImageIcon method
• Determines if image is completely loaded into memory
• Only complete images should be displayed (smooth animation)
– If loaded, returns MediaTracker.COMPLETE
– MediaTracker
• Can determine when images are loaded, or force program to
wait if not
• ImageIcon creates our MediaTracker for us
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
1
// Fig. 30.3: LogoAnimator.java
2
// Animation a series of images
3
import java.awt.*;
4
import java.awt.event.*;
5
import javax.swing.*;
LoopAnimator.java
(Part 1 of 4)
6
public class LogoAnimator extends JPanel
7
implements ActionListener {
8
9
protected ImageIcon images[];
10
protected int totalImages = 30,
11
currentImage = 0,
12
animationDelay = 50; // 50 millisecond delay
13
protected Timer animationTimer;
14
15
public LogoAnimator()
16
{
17
setSize( getPreferredSize() );
18
19
images = new ImageIcon[ totalImages ];
20
21
22
23
Outline
for ( int i = 0; i < images.length; ++i )
images[ i ] =
new ImageIcon( "images/deitel" + i + ".gif" );
24
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
startAnimation();
25
26
} // end LogoAnimator constructor
Outline
27
28
public void paintComponent( Graphics g )
29
{
super.paintComponent( g );
30
31
if ( images[ currentImage ].getImageLoadStatus() ==
32
MediaTracker.COMPLETE ) {
33
34
images[ currentImage ].paintIcon( this, g, 0, 0 );
35
currentImage = ( currentImage + 1 ) % totalImages;
}
36
37
} // end method paintComponent
38
39
public void actionPerformed( ActionEvent e )
40
{
repaint();
41
42
} // end method actionPerformed
43
44
public void startAnimation()
45
{
46
if ( animationTimer == null ) {
47
currentImage = 0;
48
animationTimer = new Timer( animationDelay, this );
49
animationTimer.start();
50
}
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
LoopAnimator.java
(Part 2 of 4)
else
51
if ( ! animationTimer.isRunning() )
52
animationTimer.restart();
53
54
// continue from last image displayed
} // end method startAnimation
55
56
public void stopAnimation()
57
{
animationTimer.stop();
58
59
} // end method stopAnimation
60
61
public Dimension getMinimumSize()
62
{
return getPreferredSize();
63
64
} // end method getMinimumSize
65
66
public Dimension getPreferredSize()
67
{
return new Dimension( 160, 80 );
68
69
} // end method getPreferredSize
70
71
public static void main( String args[] )
72
{
73
LogoAnimator anim = new LogoAnimator();
74
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LoopAnimator.java
(Part 3 of 4)
75
JFrame app = new JFrame( "Animator test" );
76
app.getContentPane().add( anim, BorderLayout.CENTER );
Outline
77
78
79
app.addWindowListener(
new WindowAdapter() {
80
public void windowClosing( WindowEvent e )
81
{
82
83
84
85
System.exit( 0 );
} // end method windowClosing
} // end anonymous inner class
); // end addWindowListener
86
87
// The constants 10 and 30 are used below to size the
88
// window 10 pixels wider than the animation and
89
// 30 pixels taller than the animation.
90
app.setSize( anim.getPreferredSize().width + 10,
anim.getPreferredSize().height + 30 );
91
92
93
app.show();
} // end main
94 } // end class LogoAnimator
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
LoopAnimator.java
(Part 4 of 4)
Outline
Program Output
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.5 Animation Issues
• Storing images
– Interlaced/non-interlaced formats
• Specifies order in which pixels are stored
• Non-interlaced - pixels stored in order they appear on screen
– Image appears in chunks from top to bottom as it is loaded
• Interlaced - pixels stored in rows, but out of order
– Image appears to fade in and become more clear
• Animation flickers
– Due to update being called in response to repaint
– In AWT GUI components
• Draws filled rectangle in background color where image was
• Draw image, sleep, clear background (flicker), draw next
image...
– Swing's JPanel overrides update to avoid this
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.5 Animation Issues (II)
• Double buffering
– Used to smooth animations
– Program renders one image on screen
• Builds next image in off-screen buffer
– When time to display next image, done smoothly
• Partial images user would have seen (while image loads) are
hidden
• All pixels for next image displayed at once
– Space/Time tradeoff
• Reduces flicker, but can slow animation speed and uses more
memory
– Used by Swing GUI components by default
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.6 Customizing Applets via the HTML
param Tag
• Applets
– Customize through parameters in HTML file that invokes
it
<html>
<applet code="LogoApplet.class" width=400
height=400>
<param name="totalimages" value="30">
<param name="imagename" value="deitel">
<param name="animationdelay" value="200">
</applet>
</html>
– Invokes applet LogoApplet
– param tags
• Each has a name and a value
• Use Applet method getParameter (returns a String)
parameter = getParameter( "animationdelay" );
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.6 Customizing Applets via the HTML
param Tag (II)
• Following example
– Use the LogoAnimator class as before, but modified
slightly
– Create Applet LogoApplet
• Takes parameters
• Creates LogoAnimator object using the parameters
• Plays animation
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
1
// Fig. 30.4: LogoAnimator.java
2
// Animating a series of images
3
import java.awt.*;
4
import java.awt.event.*;
5
import javax.swing.*;
LogoAnimator.java
(Part 1 of 5)
6
public class LogoAnimator extends JPanel
7
implements ActionListener {
8
9
protected ImageIcon images[];
10
protected int totalImages = 30,
11
currentImage = 0,
12
animationDelay = 50; // 50 millisecond delay
13
protected String imageName = "deitel";
14
protected Timer animationTimer;
15
16
public LogoAnimator()
17
{
initializeAnim();
18
19
Outline
} // end LogoAnimator constructor
20
21
// new constructor to support customization
22
public LogoAnimator( int num, int delay, String name )
23
{
24
totalImages = num;
25
animationDelay = delay;
26
imageName = name;
27
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
initializeAnim();
28
29
} // end LogoAnimator constructor
Outline
30
31
private void initializeAnim()
32
{
images = new ImageIcon[ totalImages ];
33
34
for ( int i = 0; i < images.length; ++i )
35
images[ i ] = new ImageIcon( "images/" +
36
imageName + i + ".gif" );
37
38
39
// moved here so getPreferredSize can check the size of
40
// the first loaded image.
41
setSize( getPreferredSize() );
42
startAnimation();
43
44
} // end method initializeAnim
45
46
public void paintComponent( Graphics g )
47
{
48
super.paintComponent( g );
49
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
LogoAnimator.java
(Part 2 of 5)
if ( images[ currentImage ].getImageLoadStatus() ==
50
MediaTracker.COMPLETE ) {
51
52
images[ currentImage ].paintIcon( this, g, 0, 0 );
53
currentImage = ( currentImage + 1 ) % totalImages;
} // end if
54
55
} // end method paintComponent
56
57
public void actionPerformed( ActionEvent e )
58
{
repaint();
59
60
} // end method actionPerformed
61
62
public void startAnimation()
63
{
64
if ( animationTimer == null ) {
65
currentImage = 0;
66
animationTimer = new Timer( animationDelay, this );
67
animationTimer.start();
68
}
69
else
70
71
72
// continue from last image displayed
if ( ! animationTimer.isRunning() )
animationTimer.restart();
} // end method startAnimation
73
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LogoAnimator.java
(Part 3 of 5)
74
public void stopAnimation()
75
{
animationTimer.stop();
76
77
} // end method stopAnimation
78
79
public Dimension getMinimumSize()
80
{
return getPreferredSize();
81
82
} // end method getMinimumSize
83
84
public Dimension getPreferredSize()
85
{
return new Dimension( images[ 0 ].getIconWidth(),
86
images[ 0 ].getIconHeight() );
87
88
} // end method getPreferredSize
89
90
public static void main( String args[] )
91
{
92
LogoAnimator anim = new LogoAnimator();
93
94
JFrame app = new JFrame( "Animator test" );
95
app.getContentPane().add( anim, BorderLayout.CENTER );
96
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
LogoAnimator.java
(Part 4 of 5)
97
98
99
100
101
102
103
104
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent e )
Outline
{
System.exit( 0 );
} // end method windowClosing
LogoAnimator.java
(Part 5 of 5)
} // end anonymous inner class
); // end addWindowListener
105
106
app.setSize( anim.getPreferredSize().width + 10,
anim.getPreferredSize().height + 30 );
107
108
109
app.show();
} // end main
110 } // end class LogoAnimator
111 // Fig. 30.4: LogoApplet.java
112 // Customizing an applet via HTML parameters
113 //
114 // HTML parameter "animationdelay" is an int indicating
115 // milliseconds to sleep between images (default 50).
116 //
117 // HTML parameter "imagename" is the base name of the images
118 // that will be displayed (i.e., "deitel" is the base name
119 // for images "deitel0.gif," "deitel1.gif," etc.). The applet
120 // assumes that images are in an "images" subdirectory of
121 // the directory in which the applet resides.
122 //
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
LogoApplet.java
(Part 1 of 3)
127 import java.awt.*;
128 import javax.swing.*;
Outline
129
130 public class LogoApplet extends JApplet{
131
public void init()
132
{
133
String parameter;
134
135
parameter = getParameter( "animationdelay" );
136
int animationDelay = ( parameter == null ? 50 :
Integer.parseInt( parameter ) );
137
138
139
String imageName = getParameter( "imagename" );
140
141
parameter = getParameter( "totalimages" );
142
int totalImages = ( parameter == null ? 0 :
143
Integer.parseInt( parameter ) );
144
145
// Create an instance of LogoAnimator
146
LogoAnimator animator;
147
148
149
if ( imageName == null || totalImages == 0 )
animator = new LogoAnimator();
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
LogoApplet.java
(Part 2 of 3)
150
151
152
else
animator = new LogoAnimator( totalImages,
animationDelay, imageName );
153
154
155
156
setSize( animator.getPreferredSize().width,
animator.getPreferredSize().height );
Outline
LogoApplet.java
(Part 3 of 3)
getContentPane().add( animator, BorderLayout.CENTER );
157
158
159
animator.startAnimation();
} // end method init
160 } // end class LogoApplet
Program Output
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.7 Image Maps
• Image map
– Image that has hot areas
• User can click to accomplish a task
– Bubble help
• When mouse over particular point in screen, small message
displayed in status bar
• In the following example
– Load several images
– Use event handler mouseMoved to find x-coordinate
– Based on the x-coordinate, display a message
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
1
// Fig. 30.5: ImageMap.java
2
// Demonstrating an image map.
3
import java.awt.*;
4
import java.awt.event.*;
5
import javax.swing.*;
6
public class ImageMap extends JApplet {
7
8
private ImageIcon mapImage;
9
private int width, height;
10
11
public void init()
12
{
13
14
addMouseListener(
new MouseAdapter() {
15
public void mouseExited( MouseEvent e )
16
{
17
showStatus( "Pointer outside applet" );
18
} // end method mouseExited
19
} // end anonymous inner class
20
); // end addMouseListener
21
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
ImageMap.java
(Part 1 of 3)
addMouseMotionListener(
22
new MouseMotionAdapter() {
23
24
public void mouseMoved( MouseEvent e )
25
{
showStatus( translateLocation( e.getX() ) );
26
} // end method mouseMoved
27
} // end anonymous inner class
28
); // end addMouseMotionListener
29
30
31
mapImage = new ImageIcon( "icons2.gif" );
32
width = mapImage.getIconWidth();
33
height = mapImage.getIconHeight();
34
setSize( width, height );
35
} // end method init
36
37
public void paint( Graphics g )
38
{
mapImage.paintIcon( this, g, 0, 0 );
39
40
} // end method paint
41
42
public String translateLocation( int x )
43
{
44
// determine width of each icon (there are 6)
45
int iconWidth = width / 6;
46
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
Outline
ImageMap.java
(Part 2 of 3)
47
48
49
50
51
52
53
54
55
56
57
58
if ( x >= 0 && x <= iconWidth )
return "Common Programming Error";
else if ( x > iconWidth && x <= iconWidth * 2 )
return "Good Programming Practice";
else if ( x > iconWidth * 2 && x <= iconWidth * 3 )
return "Performance Tip";
else if ( x > iconWidth * 3 && x <= iconWidth * 4 )
return "Portability Tip";
else if ( x > iconWidth * 4 && x <= iconWidth * 5 )
return "Software Engineering Observation";
else if ( x > iconWidth * 5 && x <= iconWidth * 6 )
return "Testing and Debugging Tip";
59
60
61
Outline
return "";
} // end method translateLocation
62 } // end class ImageMap
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
ImageMap.java
(Part 3 of 3)
Outline
Program Output
© Copyright 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.
30.8 Internet and World Wide Web
Resources
• Internet and web resources for multimedia related
sites.
http://www.nasa.gov/gallery/index.html
• The NASA multimedia gallery
http://sunsite.sut.ac.jp/multimed/
• The Sunsite Japan Multimedia Collection
http://www.anbg.gov.au/anbg/index.html
• The Australian National Botanic Gardens Web site provides links to
sounds of many animals.
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