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Windows 7: Windows 7 64bit Java problem

30 Sep 2010   #1

Windows 7 64 bit
 
 
Windows 7 64bit Java problem

Hi
Please can someone help, for a while now i have not been able to run Java programs on my windows 7 64bit machine, i know it has something to do with corrupt or missing registry settings and file associations, but just cant seem to get it to work, i have also made matters worse as before i could run them on one user account but not the other. Now i cant get them to run on either :-(
Please can anyone help??

The error message comes up saying "Could not find the main Class" whenever i double click a jar file.

Also when i download a java file/program the icon is just blank, so windows does not know how to open the file.

I am not that technical so if you could give me step by step instructions and i can try it when i get home tonight.

Thanks Pete


My System SpecsSystem Spec
.

30 Sep 2010   #2

Windows 7 Ultimate x64 SP1
 
 

When dealing with Java issues it is best to begin by uninstalling Java:



(click the pic for more info - be sure you uninstall both the 32 bit and 64 bit versions if you have them)

Then download the latest version(s)


(click the pic for more information)


(click the pic for links to the installers)
My System SpecsSystem Spec
30 Sep 2010   #3

Windows 7 64 bit
 
 

Thanks but that was the first thing I tried last night but it didn't help

Pete
My System SpecsSystem Spec
.


30 Sep 2010   #4

Windows 7 Ultimate x64 SP1
 
 

I had an issue with Java a few months ago and the above procedure fixed it for me.

I am sorry that it is not effective in your case.

There are many others here quite knowledgeable and I'm sure you'll receive the help you need.

Welcome to the Seven Forums, Pete!
My System SpecsSystem Spec
30 Sep 2010   #5

Windows 7 64 bit
 
 

No worries, thanks for the suggestion
My System SpecsSystem Spec
30 Sep 2010   #6
Microsoft MVP

Windows 8.1 Pro with Media Center 64 bit
 
 

System restore back to a point before you had this problem?
My System SpecsSystem Spec
30 Sep 2010   #7

Windows 7 64 bit
 
 

Hi
I have no idea how it happened it must have been something i did last night, but i switched the pc on when i got home tonight and its all back working!!!

Guess it must have been after the reboot that things must have sorted themselves out, i did change a few things in the registry so it can only have been that.

Thanks anyway

Pete
My System SpecsSystem Spec
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 Windows 7 64bit Java problem




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