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Re: Can't get [any jar files] to run any more

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On 2017-07-15 3:52 PM, Martin Gregorie wrote:
> On Sat, 15 Jul 2017 12:15:37 -0400, Rhino wrote:
> 
>> I'm game to give it a try though. Before I do, let me run something past
>> you (meaning everyone following this thread). I'm starting to think one
>> or more environment variables are messed up. I made some changes to my
>> environment variables a few days before this trouble started as a result
>> of some *other* trouble I'd been having and Eclipse worked fine after
>> that. It was only a few days later that this mysterious problem began. I
>> assumed that meant the environment variables *couldn't* be at fault. But
>> it occurs to me now that the problem began right after I rebooted
>> Windows the first time after changing the environment variables. I
>> normally just close the lid on my laptop at that end of my day rather
>> than rebooting Windows so I only end up rebooting Windows a couple of
>> times a month. I normally don't think of that much as it's never been a
>> problem. Now I'm thinking that I messed up one or more of the
>> environment variables and *this* is the actual cause of the problem! I
>> just hadn't made the connection because of the delayed Windows reboot.
>>
>> First of all, does that seem plausible? I'm afraid I've forgotten when
>> environment variable changes come into effect: is it immediately after
>> clicking on Apply as I'd thought or only after the next Windows reboot?
>> If it's the latter, that may very well be the cause of my problem.
>>
> Rule number one is *NEVER* make changes to system-level environment
> variables and the file that hold the definitions without making copies
> and putting them where they'll get backed up and can survive a cold boot.
>  
I definitely broke *that* rule ;-) Then again, this is the first time 
I've ever heard that advice given specifically for environment 
variables. Of course I have heard it many times in more general terms 
like "always back up important stuff before you make changes". It's just 
that I'd never had a significant problem like this after making 
environment variable changes so I didn't realize I was opening myself up 
to such a can of worms.

Unfortunately, it's water under the bridge. I'm still trying to figure 
out what I should do now to get things back into a state where Eclipse 
runs again.

>> Second, if the environment variable change only takes effect after a
>> Windows reboot, which variables might be the culprit? At this point,
>> nearly two weeks after touching the environment variables in the first
>> place, I've forgotten exactly which one(s) I adjusted. Can someone point
>> me to material that tells me which ones are important and how they
>> should be set for Windows 10 (64-bit) and an Eclipse that is Mars.2 or
>> newer?
>>
> I think that depends: configuration stuff that is local to a user or gets
> regenerated at login time will either 'just be there' or will get
> refreshed by logging off and on again. Anything which affects the system
> as a whole is more likely to need a reboot to take effect.
> 
> But, I can't be more specific than that because I dumped Windows for
> RedHat Linux about the time that Win95 was being dumbed down into Win98.
> 
> Dropping Windows is one of the best decisions I've ever made.
> 
I'm sympathetic to what you're saying, I really am. I was an OS/2 loyalist
for several years and would probably still be on it if IBM hadn't given 
up on it. I have some Linux experience and am not completely adverse to 
using it but the last time I considered it, there were too many things I 
couldn't do in Linux because there simply were no apps - or at least 
readily affordable apps - for functions I needed. That was several years 
back so I don't honestly remember *what* functions those were at least a 
couple of them were critical to me. I was not - and still am not - keen 
on having to have to split things I wanted to do between multiple 
computers or multiple partitions on a computer. Much of my work stuff 
can ONLY be done in Windows (and IE/Edge) so I don't have much of a 
choice right now.

But maybe I should put Linux on my spare laptop and see if I can live 
with it, at least for a development environment. I imagine there are a 
lot more apps for Linux these days.

Then again, if I try Arne's advice and just reinstall the JRE/JDK one 
more time - and try to undo the environment variable changes I made (if 
I can only remember what I did!) - maybe I'll get Eclipse working on 
Windows again.

I'm not the world's most decisive guy, especially when faced with 
several good options, each with their own pros and cons....




-- 
Rhino

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Thread

Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 09:33 -0400
  Re: Can't get Eclipse to run any more Jerry Stuckle <jstucklex@attglobal.net> - 2017-07-13 10:28 -0400
    Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 11:26 -0400
      Re: Can't get Eclipse to run any more Jerry Stuckle <jstucklex@attglobal.net> - 2017-07-13 16:02 -0400
        Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 17:10 -0400
          Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 18:11 -0400
            Re: Can't get Eclipse to run any more Arne Vajhøj <arne@vajhoej.dk> - 2017-07-13 18:13 -0400
              Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 18:56 -0400
                Re: Can't get Eclipse to run any more Arne Vajhøj <arne@vajhoej.dk> - 2017-07-13 19:23 -0400
                Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 22:36 -0400
                Re: Can't get Eclipse to run any more Jerry Stuckle <jstucklex@attglobal.net> - 2017-07-13 22:44 -0400
                Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-14 13:53 -0400
                Re: Can't get Eclipse to run any more Jerry Stuckle <jstucklex@attglobal.net> - 2017-07-14 14:53 -0400
                Re: Can't get Eclipse to run any more Martin Gregorie <martin@address-in-sig.invalid> - 2017-07-14 19:18 +0000
            Re: Can't get [any jar files] to run any more Andreas Leitgeb <avl@logic.at> - 2017-07-14 07:14 +0000
              Re: Can't get [any jar files] to run any more Rhino <no_offline_contact@example.com> - 2017-07-14 14:02 -0400
                Re: Can't get [any jar files] to run any more Eric Douglas <e.d.programmer@gmail.com> - 2017-07-14 11:06 -0700
                Re: Can't get [any jar files] to run any more Arne Vajhøj <arne@vajhoej.dk> - 2017-07-14 14:49 -0400
                Re: Can't get [any jar files] to run any more Rhino <no_offline_contact@example.com> - 2017-07-15 12:15 -0400
                Re: Can't get [any jar files] to run any more Martin Gregorie <martin@address-in-sig.invalid> - 2017-07-15 19:52 +0000
                Re: Can't get [any jar files] to run any more Rhino <no_offline_contact@example.com> - 2017-07-15 16:31 -0400
                Re: Can't get [any jar files] to run any more Eric Douglas <e.d.programmer@gmail.com> - 2017-07-17 06:04 -0700
                Success! [Was: Can't get [any jar files] to run any more] Rhino <no_offline_contact@example.com> - 2017-07-18 06:33 -0400
                Success! [Was: Can't get [any jar files] to run any more] Rhino <no_offline_contact@example.com> - 2017-07-18 06:27 -0400
            Re: Can't get Eclipse to run any more Eric Douglas <e.d.programmer@gmail.com> - 2017-07-14 05:23 -0700
          Re: Can't get Eclipse to run any more v_borchert@despammed.com (Volker Borchert) - 2017-07-14 19:06 +0000
            Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-15 12:17 -0400
  Re: Can't get Eclipse to run any more Silvio <silvio@internet.com> - 2017-07-13 18:09 +0200
    Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-13 16:58 -0400
      Re: Can't get Eclipse to run any more Silvio <silvio@internet.com> - 2017-07-15 01:57 +0200
        Re: Can't get Eclipse to run any more Rhino <no_offline_contact@example.com> - 2017-07-15 12:01 -0400

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