显示图片
Applet 能显示 GIF,JPEG,BMP 等其他格式的图片。为了在 Applet 中显示图片，你需要使用 java.awt.Graphics 类的drawImage()方法。
如下实例演示了显示图片的所有步骤：
ImageDemo.java 文件代码：
import
java
.
applet
.*;
import
java
.
awt
.*;
import
java
.
net
.*;
public
class
ImageDemo
extends
Applet
{
private
Image
image
;
private
AppletContext
context
;
public
void
init
(
)
{
context
=
this
.
getAppletContext
(
)
;
String
imageURL
=
this
.
getParameter
(
"
image
"
)
;
if
(
imageURL
==
null
)
{
imageURL
=
"
java.jpg
"
;
}
try
{
URL
url
=
new
URL
(
this
.
getDocumentBase
(
)
,
imageURL
)
;
image
=
context
.
getImage
(
url
)
;
}
catch
(
MalformedURLException
e
)
{
e
.
printStackTrace
(
)
;
//
Display in browser status bar
context
.
showStatus
(
"
Could not load image!
"
)
;
}
}
public
void
paint
(
Graphics
g
)
{
context
.
showStatus
(
"
Displaying image
"
)
;
g
.
drawImage
(
image
,
0
,
0
,
200
,
84
,
null
)
;
g
.
drawString
(
"
www.javalicense.com
"
,
35
,
100
)
;
}
}
<html>
<title>The ImageDemo applet
</
title
>
<
hr
>
<
applet
code
=
"
ImageDemo.class
"
width
=
"
300
"
height
=
"
200
"
>
<
param
name
=
"
image
"
value
=
"
java.jpg
"
>
</
applet
>
<
hr
>
</
html
>