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Windows 7: JAVA, IE8 and Windows 7

05 Jul 2012   #1

JAVA, IE8 and Windows 7

Hi ...
some times when i am into a Portal when i give cllic in some options i get an error :
java.lang.ClassCastException: incompatible with com.miportal.portaldauno.middleware.dto.InstitutionDTO

what is the best recommendation for my pc:
windows 7 (64 o 32 bits), IE8 (32 o 64 bits) java (1.6 1.8 ?)

I guess i have this issue because i have Windows 7 64 bits and IE8 32 bits ...

please let me know your thoughts to install the best version among Java, IE8 and Windows 7
Thanks in advance.

My System SpecsSystem Spec

05 Jul 2012   #2

Microsoft Windows 8.1 Professional

Unless you post computer specs we cant help you decide which windows version is the right one for you, but since you on XP it may be an old computer, leave it on XP and upgrade Java to latest version.
My System SpecsSystem Spec
05 Jul 2012   #3

Microsoft Windows 8.1 Pro 64-bit

no, that doesn't affect it. I highly recommend upgrading to IE9:

It might even fix this error for you. While I am not familiar with the code exactly, I would recommend uninstalling java (if you want to, upgrading to IE9), and then reinstalling java 32 bit once more from here:

However! If you decide to upgrade to IE9, you will need this java version instead (get it after you upgrade, not before): Download Java for Windows

(All advice for Windows 7 64 bit only)
My System SpecsSystem Spec

06 Jul 2012   #4


Thank you very much for your answer .. i will verify it.
My System SpecsSystem Spec
06 Jul 2012   #5

Microsoft Windows 8.1 Pro 64-bit

Some people don't even use java anymore, me included. If you don't play internet games, you might consider leaving it uninstalled. You could always reinstall it come the event that you realize you do need it.
My System SpecsSystem Spec

 JAVA, IE8 and Windows 7

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