Re: Applet runs fine Pre IE 7 Now errors

baillie wrote:

We have an applet that has been working fine for years. Now we have
tried it on IE 7 and get the following errors in the Java Console:
....
java.lang.NullPointerException
....
We end up with an icon of a page of paper with a red x on it.

I'm stumped. My inexperience here is hanging out like a sore thumb.
Sorry about that. I know what a NULL pointer is (I've had experience
with those puppies). I just don't know where to start with this.
Going by the error messages above, it appears that the problem is in
actual Sun Java code?

Microsoft would probably like you to think that.

...What's changed in the way IE handles Sun Java
that suddenly breaks this applet?

There has been a major change in the way IE interacts with
applets because of some patent. The end result is that the
user needs to click on the applet before it is active.

I suspect this is the source of your NPE.

Any suggestions will be very much appreciated.

1) Give us an URL to the web-page where other IE7 users can
test the effect.
2) Prepare an SSCCE That displays the same problem.
<http://www.physci.org/codes/sscce/>

Andrew T.

.

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