50209 - 'No plugin downloader plugin' dialog pops when page with applet(non functional) is attached in mail

Status: RESOLVED WONTFIX

(Core Graveyard :: Java: OJI, defect, P3)

Description

[shrirang khanzode]

I am not sure where this bug should go, plugins or java plugins.
Assigning to stanley first.

Vishy found out this problem when opening the above url as an attachment in 
messenger using seamonkey. 'No plugin downloader plugin' message pops up when 
the mail is viewed. It only pops up once per session. I observed that there is 
an applet on top of this page on which the java plugin throws an exception and 
the applet does not load. 

As a test, I tried the java.sun.com main page and sent it as an attachment to 
myself. The dialog does not appear but the applets do not show in the mail(a 
blank space is seen).

Note that this page when tried to load in browser(if java is installed) shows a 
grey area with applet status and launches a java exception dialog saying " 
java.lang.ClassFormatError:RiadaBillboard(Local variable name has bad constant 
pool index)"

All of this above happens with the npnull32.dll present in the plugins folder 
under mozilla installation.

Comment 1

[stanley.ho]

When I tried the page at www.techpages.com, I saw the following exception:

java.lang.ClassFormatError: RiadaBillboard (Local variable name has bad 
constant pool index)
	at java.lang.ClassLoader.defineClass0(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at sun.applet.AppletClassLoader.findClass(Unknown Source)
	at 
sun.plugin.security.PluginClassLoader.findClassPluginClassLoader.java:213)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.applet.AppletClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.applet.AppletClassLoader.loadCode(Unknown Source)
	at sun.applet.AppletPanel.createApplet(Unknown Source)
	at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1196)
	at sun.applet.AppletPanel.runLoader(Unknown Source)
        at sun.applet.AppletPanel.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

    The exception is thrown because the applet was compiled using very old 
compiler that doesn't generate proper class file that follows the Java virtual 
machine specification. This explains why the applet is not loaded by Java Plug-
in.

     However, in the other case which plug-in doesn't load applet from 
java.sun.com, I will need more information from shrir. Shrir, what kind of 
exception messages do you see in the Java Console??

Comment 2

[Jesse Ruderman]

related? bug 51040

Comment 3

[edburns]

The ClassFormatError means the applet needs to be recompiled with a Java 2 (TM) 
compiler.  Please see bug 62025 for more info.  Search for ClassFormatError in 
the bug.

Comment 4

[shrirang khanzode]

SPAM: reassigning OJI bugs to new QA, pmac. (227 bugs)