Having an issue with jre 6u24

Hi,

I have a jar file that I want to execute on my Win 7 box but when I run it, it says "main class not found" when double-clicking on it to launch. When I open a command-line box and type in "java -jar ap.jar", then it works fine. This problem is just when I double-click it.

To make sure it tries to run it with the JRE, I did an "open with.." and selected the JRE there, but still no go.

I have then copied the jar file across to another box that had the jre already installed and it works there, so there is nothing wrong with the jar file itself.

Any ideas what the issue could be?

Thanks!

so your having a problem with opening it? Or with the code?

WindowsSkull said:

so your having a problem with opening it? Or with the code?

I have issues opening it, not the code. The application works fine in other Windows installations (it works on a macbook as well), it is just on this one Windows 7 box that it would not open.

And I have uninstalled the JRE and rebooted several times, but still no joy.

Orbital Shark said:

Hi, welcome to the forums :)

You may find the following article of interest as it's related

Can't open .jar files on my windows 7 - Microsoft Answers

Thanks :)

I have downloaded and installed the JRE numerous times to try and solve this, but it does not work. As I said, it works fine where starting it from the command-line, but when I double-click on it, then I get that error.

And the JRE is associated with the .jar extention. It definitely loads the JRE, because it is the JRE itself that complains about the "main class not found".

This post might be helpful.... MSE 2 Final Released!

sygnus21 said:

This post might be helpful.... MSE 2 Final Released!

Thanks for the link. I am going to run JavaRa to make sure everything gets removed and then do a re-install....

OK. BTW did you look at the instructions in the link?

sygnus21 said:

OK. BTW did you look at the instructions in the link?

Yes, going to follow them. The jre that I downloaded is the "offline install" version, but I am going to follow the instructions step-by-step.

The only real difference between these steps and what I have done previously, is that I did not close my web browser first. I allowed the jre install to close it for me. But for this one I will make sure nothing runs.


Thanks.

Good luck.