... (stream extraction operator)
ã Used with std::cin
ã Waits for user to input value, then press Enter (Return) key
ã Stores value in variable to right of operator
Converts value to variable data type
ã ... (assignment operator)
Assigns value to variable
– Binary operator (two operands)
–Example:
sum = variable1 + variable2;
2003 Prentice Hall, Inc. All rights reserved.
24
Introduction to Object Technology
ã ...
Operators
Standard algebraic
equality operator or
relational operator
C++ equality
or relational
operator
Example
of C++
condition
Meaning of
C++ condition
Relational operators
>...
... BSD-based
UNIX
to System V Release 4–based
UNIX
, from OpenWindows to
Motif, from PC to
UNIX
to Macintosh (or some combination thereof), and
between various other alternatives, too numerous to mention. ... and reference to the
java. awt
pack-
age (including
java. awt.image
,
java. awt.event
,
java. awt.datatransfer
, and
java. awt.peer
). It assumes that you’re already familiar with the Java language ... C
HAPTER
1: A
BSTRACT
W
INDOW
T
OOLKIT
O
VERVIEW
Text Area
North
East
South
Button
Label
Button
Button
Button Button Button
BorderLayout Panel
FlowLayout Panel
GridLayout Panel
Figure 1–15: Components...
... Program
import java. awt.Graphics;
import java. awt.Color;
import java. awt.image.ImageConsumer;
import java. awt.Image;
import java. awt.MediaTracker;
import java. net.URL;
import java. net.MalformedURLException;
import ... deliver any data to the ultimate consumer.
To use an ImageFilter, you pass it to the FilteredImageSource constructor, which
ser ves as an ImageProducer to pass the new pixels to their consumer. ... and store[][]). We read
red, green, and blue components from row[], converting Java s signed bytes to
unsigned data by adding 256 to any negative values; finally, we pack these compo-
nents into...
... an AWTError if it is executed with this command:
java -Dawt.toolkit=foo throwme
The error occurs because the Java interpreter tries to use the toolkit foo, which
does not exist (assuming that ... classes in java. awt; you may, however, find it convenient to throw AWTException
within your own code. IllegalComponentStateException is another Exception
subclass, which is new toJava 1.1. This ... AWTException to indicate a
problem. Using AWTException is slightly preferable to creating your own Excep-
tion
subclass because you do not have to generate another class file. Since it is a
part of Java,
AWTException...
... don’t stop
an audio clip, the user will have to exit the browser to get the sound to stop
playing.
Applets can play audio clips simultaneously. Based upon the user’s actions, you
may want to play ... a Vector of AudioStreams) as its sole parameter. The construc-
tor converts the sequence of audio streams into a single stream to be played in
order. An example follows:
Vector v = new Vector ... since
it loops back to the beginning on end-of-file.
14.5 AUDIO IN APPLICATIONS 485
10 July 2002 22:23
java. awt.Componentjava.lang.Object java. awt.Container
java. awt.Panel
java. applet.Applet
Figure...
... by the Java environment to be
sun.awt.win32.MToolkit (Java1 .0) or sun.awt.windows.MToolkit (Java1 .1).
On the Macintosh platform, this is overridden by the environment to be
sun.awt.macos.MToolkit. ... upon to do its magic.
10 July 2002 22:23
500 CHAPTER 15: TOOLKIT AND PEERS
Button
Native Button
(peer object)
Toolkit
createButton()
Java- Land
addNotify()
Real World
Figure 15–2: Creating a Button ... provides a Toolkit for Windows NT/95 (sun.awt.win32.MToolkit [Java1 .0]
or sun.awt.windows.MToolkit [Java1 .1]), Solaris/Motif
(sun.awt.motif.MToolkit), and Macintosh (sun.awt.macos.MToolkit). Although
the
Toolkit...
... be:
application/x -java- serialized-object java. util.Vector
In addition to the content type, a DataFlavor also contains a presentable name. The
presentable name is intended to be more comprehensible to humans ... missing from Java 1.0 was the ability to access the system clip-
board. It was impossible to cut and paste data from one program into another. Java
1.1 includes a package called java. awt.datatransfer ... has been added to rep-
resent Java classes; the content type of a Java object is:
*
application/x -java- serialized-object
<classname>
For example, the content type of a Vector object would...
... what this means, since the num-
ber returned has no relationship to the printer resolution. It appears to be
similar to the screen resolution.
public abstract boolean lastPageFirst () ★
The lastPageFirst() ... dispose() to send the page to the printer:
printAll(pg);
pg.dispose(); // This is like sending a form feed
4. Clean up after yourself:
pjob.end();
The following code summarizes how to print:
// Java ... getPrintJob() modifies it to show the actual options used
to print the job. You can use the modified properties sheet to find out what prop-
erties are recognized on your system and to save a set of printing...
... following packages:
ã java. applet (Chapter 18, java. applet Reference)
ã java. awt (Chapter 1, java. awt Reference)
ã java. awt.datatransfer (Chapter 20, java. awt.datatransfer Reference)
ã java. awt.event ... example, the
Button class
contains seven public methods, none of which happens to be setFont(). The
font used to display a button’s label is certainly settable—but to find it, you have to
look in the ... Reference)
ã java. awt.event (Chapter 21, java. awt.event Reference)
ã java. awt.image (Chapter 22, java. awt.image Reference)
ã java. awt.peer (Chapter 23, java. awt.peer Reference)
Within each package,...