Java Reference
In-Depth Information
Thread
.
sleep
(
sleepTime
);
}
catch
catch
(
InterruptedException e
) {
return
return
;
}
}
}
/** paint -- just draw our image at its current location */
public
public
void
void
paint
(
Graphics g
) {
g
.
drawImage
(
img
,
0
,
0
,
this
this
);
}
}
Example 22-6. Bounce.java (part of animator program)
public
public class
class
Bounce
Bounce
extends
extends
Applet
implements
implements
ActionListener
{
private
private static
long
serialVersionUID
= -
5359162621719520213L
;
/** The main Panel */
protected
static final
final
long
protected
Panel p
;
/** The image, shared by all the Sprite objects */
protected
protected
Image img
;
/** A Vector of Sprite objects. */
protected
protected
List
<
Sprite
>
v
;
public
public
void
void
init
() {
Button b
=
new
new
Button
(
"Start"
);
b
.
addActionListener
(
this
this
);
setLayout
(
new
new
BorderLayout
());
add
(
b
,
BorderLayout
.
NORTH
);
add
(
p
=
new
new
Panel
(),
BorderLayout
.
CENTER
);
p
.
setLayout
(
null
null
);
String imgName
=
getParameter
(
"imagefile"
);
iif
(
imgName
==
null
null
)
imgName
=
"duke.gif"
;
img
=
getImage
(
getCodeBase
(),
imgName
);
MediaTracker mt
=
new
new
MediaTracker
(
this
this
);
mt
.
addImage
(
img
,
0
);
try
try
{
mt
.
waitForID
(
0
);
}
catch
catch
(
InterruptedException e
) {
throw
throw new
new
IllegalArgumentException
(
"InterruptedException while loading image "
+
imgName
);
}
iif
(
mt
.
isErrorID
(
0
)) {
throw
throw new
new
IllegalArgumentException
(
"Couldn't load image "
+
imgName
);
