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12.3 Including Applets for the Java Plug In

The

jsp:plugin

 element instructs the server to build a tag appropriate for

applets that use the plug in. Servers are permitted some leeway in exactly how

they implement this support, but most simply include both

OBJECT

and

EMBED

The jsp:plugin Element

The simplest way to use

jsp:plugin

 is to supply four attributes:

type

code

width

, and

height

. You supply a value of

applet

 for the

type

 attribute and

use the other three attributes in exactly the same way as with the

APPLET

ele

ment, with two exceptions: the attribute names are case sensitive, and single

or double quotes are always required around the attribute values. So, for

example, you could replace


        WIDTH=475 HEIGHT=350>

with

            code="MyApplet.class"

            width="475" height="350">

The

jsp:plugin

 element has a number of other optional attributes. Most,

but not all, parallel attributes of the

APPLET

 element. Here is a full list.

type

For applets, this attribute should have a value of

applet

However, the Java Plug In also permits you to embed JavaBeans

elements in Web pages. Use a value of

bean

 in such a case.

code

This attribute is used identically to the

CODE

 attribute of

APPLET

, specifying the top level applet class file that extends

Applet

or

JApplet

. Just remember that the name

code

 must

be lower case with

jsp:plugin

 (since it follows XML syntax),

whereas with

APPLET

, case did not matter (since HTML

attribute names are never case sensitive).

width

This attribute is used identically to the

WIDTH

 attribute of

APPLET

, specifying the width in pixels to be reserved for the

applet. Just remember that you must enclose the value in single

or double quotes.

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