173140 - Moz does not recognize the Java plugin classid attribute in an <object> tag

Status: RESOLVED DUPLICATE of bug 153288

(Core Graveyard :: Java-Implemented Plugins, defect)

Description

[brent]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.1) Gecko/20020826
Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.1) Gecko/20020826

Sun has a section on their website describing how to get the Java plugin to work
with the <object> tag:
	http://java.sun.com/j2se/1.4/docs/guide/plugin/developer_guide/using_tags.html

Using the info in the above link as a guide, I wrote the following fragment of
html for a particular applet of mine:

	<object codetype="application/java"
classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
codebase="http://java.sun.com/products/plugin/1.4/jinstall-14-win32.cab#Version=1,4,0,mn"
width="250" height="400" style="vertical-align: baseline;">
			<!-- Specify the Applet class to use: -->
		<param name="code" value="FastAnimationApplet.class">
		<param name="codebase" value="./">
		<param name="archive" value="./animationResources.jar">
			<!-- Specify other features about the Applet: -->
		<param name="type" value="application/x-java-applet;jpi-version=1.4">
		<param name="scriptable" value="false">
			<!-- Specify archive caching (see
http://java.sun.com/j2se/1.3/docs/guide/misc/appletcaching.html): -->
		<param name="cache_option" value="No">
		<param name="cache_archive" value="./animationResources.jar">
			<!-- Text to display if Java not supported: -->
		A Java applet should be here, but either your browser does not support Java 2
SDK Standard Edition v 1.4.1, Java has been disabled, or an error occurred.
	</object>

This code fragment works perfectly fine in IE; the applet runs using Sun's plugin.

But it fails with Mozilla.  And it is NOT because I do not have the plugin on my
machine or something.  Instead, to get it work with Mozilla, I found that I had
to change the classid attribute in the <object> tag to
	classid="java:FastAnimationApplet.class"
and remove the codebase attribute.

What is happening here?  How come Mozilla seems to ignore a classid
specification for the Javaplugin and requires the "java:" syntax instead?

I REALLY hope that Moz is not incompatible with Sun's rec for the <object> tag,
as I cannot write multiple versions of files, and will have to give up support
for Mozilla if it differs from Sun/IE.

p.s. I did the following bug search on the keywords "java plugin classid object"
before filing this report, but it found nothing:


Reproducible: Always

Steps to Reproduce:
1. the code fragment in the details section says it all
2.
3.

Actual Results:  
Mozilla displayed the text stating that "A Java applet should be here, but
either your browser does not support Java 2 SDK Standard Edition v 1.4.1, Java
has been disabled, or an error occurred."

Expected Results:  
Run the applet using Sun's Java plugin

None

Comment 1

[Mats Palmgren (inactive)]

See bug 46569

Comment 2

[brent]

>See bug 46569

Thanks for the ref Mats.

I looked over the discussion, and the short answer seems to be that the classid
that I am using specifies an ActiveX control.  Unfortunately, Moz  currently
does not (and never will?) support ActiveX.

People there seemed to suggest all kinds of alternate solutions, such as using
multiple embedded <object> tags (one for IE, one for Moz), leaving out the
classid and just use type and data attributes to specify things, etc.

Their discussion is quite abbreviated, and I did not find anything that quite
seems to address my problem.  I tried playing around with some of their
suggestions, but could not get it to work (probably because what I was using in
the data attribute was wrong?)

I would like a solution with the following characteristics:
	--everything is inside a single <object> tag
	--a Java applet is what will be run
	--the applet's code is located inside a jar file
	--I need to be able to specify a specific JVM version (which will be downloaded
if the user does not have it)
	--the solution works under both IE and Moz
	--the html file must validate against the strict html 4.01 dtd

If you could tell me how to do this I would be much obliged. 

Comment 3

[Boris Zbarsky [:bzbarsky]]

I recommend bug 108557 comment 66 for an example of what you want.  That should
work in any browser, I believe (though it is possible that IE will refuse to
recognize it and demand that you give it an ActiveX component; in that case your
only recourse is to nest <object> tags and to lobby with MS to support
non-activeX plugins).

The problem was that we tried to support the clsid stuff, but we ran into a huge
number of issues because we were not in fact using the ActiveX component.

*** This bug has been marked as a duplicate of 153288 ***