[R] rJava works with 32-bit but not 64

[Simon Urbanek]

On Feb 4, 2013, at 10:27 AM, Spencer Graves wrote:

> On 2/4/2013 5:22 AM, Milan Bouchet-Valat wrote:
>> Le lundi 04 février 2013 à 08:19 -0400, Simon Urbanek a écrit :
>>> On Feb 4, 2013, at 6:33 AM, Spencer Graves wrote:
>>> 
>>>> On 2/3/2013 11:21 PM, Pascal Oettli wrote:
>>>>> Hello,
>>>>> 
>>>>> Do you have a 64-bit version of Java?
>>>>> 
>>>>> rJava says to you:
>>>>> call: stop("No CurrentVersion entry in '", key, "'! Try
>>> re-installing Java and make sure R and Java have matching
>>> architectures.")
>> Simon, have you noticed there seem to be a bug in rJava about the
>> missing 'key' variable? The error message would be (slightly) cleaner if
>> the stop() call succeeded, wouldn't it? ;-)
> 
> 
>      A subtle bug which only appears with the 64-bit but not the 32-bit version ... ?
> 

Just a subtle bug in the error message if there is no Java installed (has nothing to do with the architecture). Now fixed.

Cheers,
Simon


> 
>      I agree:  Thanks very much for your work.  Spencer
> 
>> Thanks for your work
>> 
>>>>      I think I probably have a 32-bit version and not a 64-bit,
>>> because it works with 32-bit R but not 64-bit R.
>>>> 
>>>>      Is it feasible to have both installed in a way that allows the
>>> each version of R to select its own version of Java?
>>> 
>>> Yes, that is the default. 32-bit R will only see 32-bit Java and vice
>>> versa, because Windows separates 32-bit and 64-bit registries.
>>> 
>>> 
>>>>  A comment on stackoverflow suggests that may not be easy
>>> (http://stackoverflow.com/questions/5272216/is-it-possible-to-install-both-32bit-and-64bit-java-on-windows-7).
>>> Ehm, it says "Yes, it is absolutely no problem. " -- which part of it
>>> suggests it's not easy? SO is a good source of rumors, seldom facts --
>>> but in this case it's not too far from the truth.
>>> 
>>> Cheers,
>>> Simon
>>> 
>>> 
>>>>      Thanks,
>>>>      Spencer
>>>> 
>>>>> Regards,
>>>>> Pascal
>>>>> 
>>>>> 
>>>>> Le 04/02/2013 14:27, Spencer Graves a écrit :
>>>>>> Hello:
>>>>>> 
>>>>>> 
>>>>>>       rJava works for me under 32-bit but under not 64-bit R; see below.
>>>>>> 
>>>>>> 
>>>>>>       Suggestions?
>>>>>>       Thanks,
>>>>>>       Spencer
>>>>>> 
>>>>>> 
>>>>>>> library(rJava)
>>>>>> Error : .onLoad failed in loadNamespace() for 'rJava', details:
>>>>>>   call: stop("No CurrentVersion entry in '", key, "'! Try
>>> re-installing
>>>>>> Java and make sure R and Java have matching architectures.")
>>>>>>   error: object 'key' not found
>>>>>> Error: package/namespace load failed for 'rJava'
>>>>>>> sessionInfo()
>>>>>> R version 2.15.2 (2012-10-26)
>>>>>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>>>>>> 
>>>>>> locale:
>>>>>> [1] LC_COLLATE=English_United States.1252
>>>>>> [2] LC_CTYPE=English_United States.1252
>>>>>> [3] LC_MONETARY=English_United States.1252
>>>>>> [4] LC_NUMERIC=C
>>>>>> [5] LC_TIME=English_United States.1252
>>>>>> 
>>>>>> attached base packages:
>>>>>> [1] stats     graphics  grDevices utils     datasets  methods base
>>>>>> ##########################
>>>>>> 
>>>>>> 
>>>>>>> library(rJava)
>>>>>>> sessionInfo()
>>>>>> R version 2.15.2 (2012-10-26)
>>>>>> Platform: i386-w64-mingw32/i386 (32-bit)
>>>>>> 
>>>>>> locale:
>>>>>> [1] LC_COLLATE=English_United States.1252
>>>>>> [2] LC_CTYPE=English_United States.1252
>>>>>> [3] LC_MONETARY=English_United States.1252
>>>>>> [4] LC_NUMERIC=C
>>>>>> [5] LC_TIME=English_United States.1252
>>>>>> 
>>>>>> attached base packages:
>>>>>> [1] stats     graphics  grDevices utils     datasets  methods base
>>>>>> 
>>>>>> other attached packages:
>>>>>> [1] rJava_0.9-3
>>>>>> 
>>> ______________________________________________
>>> R-help at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
> 
>