NetBeans 6.5 and JRuby 1.2.0

[Lars Frantzen]

Hello,

I installed JRuby on my Ubuntu laptop and used the 'Autodetect
Platforms' feature of NetBeans to detect it, which seemed to work fine.

But when I try to run a JRuby project I get:

Exception in thread "main" java.lang.NoClassDefFoundError: org/jruby/Main
Caused by: java.lang.ClassNotFoundException: org.jruby.Main
...

Would be happy for every hint!

Cheers,
Lars

[Erno Mononen]

Hi Lars,

Can you try whether the following works from the command line:

<jruby-1.2.0 install dir>bin/jruby -v


Erno



Lars Frantzen wrote:

[Lars Frantzen]

Hi Erno,

thanks for the reply.

Erno Mononen wrote:

[Lars Frantzen]

Hi,

I could fix it by manually adding the JRuby 1.2.0 platform. Something
seems to go wrong when doing the autodetect.

Cheers,
Lars

Erno Mononen wrote:

Lars Frantzen wrote:

[Erno Mononen]

Hi Lars,

Glad to hear you found a way to add it.

I apparently forgot to reply to this thread earlier (the other thread
about a similar issue got me to forgot this one). Anyway, what I wanted
to reply is that the log file could help us tracking down the problem,
so if you have the time please turn on detailed logging
(http://wiki.netbeans.org/FaqRubyNBLogging), reproduce the issue and
send the log file to me. The root cause here seems to be something else
than in the other thread.

Thanks,
Erno


Lars Frantzen wrote:

[eradikat]

Hey guys,

I'm still consistently seeing this issue. Adding the platform manually used to work in previous versions, but now i still see the issue no matter what combination of adding, autodetecting, removing, and adding I do.

I turned on detail logging and here is my IDE Log:

http://pastie.org/private/5ocanyzds9fjpwz5d2v3w

Please advise on how I can resolve this.

It's been plaguing me for months now, and suddenly RubyMine is looking more attractive than NetBeans to my office peers (due to this issue). Not being able to migrate / rake / generate stuff in the IDE is a tough problem to swallow.

EDIT: I should also point out this happens for both Netbeans 6.7 and 6.8 Beta, as well as for JRuby 1.2.0 and 1.3.1

[fabsn]

I had the same issue today with the new version of NetBeans 6.8. I got it solved by adding the /opt/local/share/java/jruby/lib/jruby.jar jar in the java Categori of the project Preference Panel. I think it should be seen as a workarround.

[eradikat]

I actually finally figured out the issue yesterday. The way I got it to work was by doing two things:

1) Remove all the ruby platforms it has automatically added. Then, select your JRuby platform manually, but do NOT select the path /usr/local/jruby... you must select the actual source path e.g. /usr/local/src/jruby/1.3.1/bin/jruby. Only then will it work.

2) Add your gems path manually, in my case it's ~/.gems/

Now everything works! Running migrations, generates, rakes and specs all work great.