RE: JDK 1.4 broke applets

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Richard

Further digging has discovered that, in my case it is the Proxy Server that
may be the problem.
See http://developer.java.sun.com/developer/bugParade/bugs/4423881.html

In my case the Proxy is Microsoft ISA, which requires a Microsoft specific
User Authentication protocol (NTLM). JDK 1.4 doesn't support this, instead
using a open standard, called Digest Authentication. ISA does support this,
but not by default (and older Microsoft Proxy Servers not at all), and you
need to be on a W2K domain, not an NT domain. As we are on NT, I can't even
prove whether or not this will solve the problem.

Why this suddenly stopped working isn't explained - I guess Sun just decided
not to support the proprietary MS protocol any longer - possibly as a
knock-on from resolving the lawsuit between the 2 companies.

It will be interesting to see the IBM implementation of 1.4 has the same
"feature".

Obviously this may not be the same as your problem, but I hope the
information helps.

Chris

-----Original Message-----
From: Richard Dettinger [mailto:cujo@us.ibm.com]
Sent: 25 April 2002 14:10
To: java400-l@midrange.com
Subject: Re: JDK 1.4 broke applets



I just learned of this 'situation' myself yesterday.  Its not a pretty
thing when you work in a company that uses applets for several important
tasks and you are responsible for development of JDK 1.4 related software.
Pretty hard to file expense reports for example.

If anyone hears/knows the answer, I'd love to hear about it even though its
a little outside the realm of what we normally talk about in this group.

Richard D. Dettinger
iSeries Java Data Access Team

Democracy's enemies have always underestimated the courage of the American
people.
It was true at Concord Bridge.  It was true at Pearl Harbor.  And it was
true today.

         Rochester Post-Bulletin
         Tuesday September 11, 2001


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All,

Having downloaded & installed the Sun 1.4 JDK, I can no longer run any
applets using the plugin.

For example, if I go to
http://java.sun.com/products/plugin/1.4/demos/applets/Clock/example1.html I
get a console message:
load: class Clock.class not found.
java.lang.ClassNotFoundException: Clock.class
             <stacktrace not shown>
Caused by: java.io.IOException: open HTTP connection failed.
             <stacktrace not shown>

I've looked in the JDC forums, and there seems to be a number of people
reporting this issue (something to do with proxy servers), but no-one has a
solution. So I thought I'd ask you guys <pathetic fawning> since your
smarter </pathetic fawning>.

Chris.
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