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

[Simon Urbanek]

On Feb 4, 2013, at 7:14 PM, Spencer Graves wrote:

> On 2/4/2013 7:03 AM, Simon Urbanek wrote:
>> 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.
> 
> 
>      Great.  How can I get the new version?  [If it were on R-Forge, I could get it via install.packages("rJava", repos="http://R-Forge.R-project.org").]
> 

You got it almost right - it's slightly shorter than that:

install.packages("rJava",, "http://RForge.net")

but you know that if you ever looked at the rJava page ;)

Cheers,
Simon


> 
>      Thanks,
>      Spencer
>> 
>> 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.
> 
>