[R] Problem with loading rJava in R

Prof Brian Ripley ripley at stats.ox.ac.uk
Thu Feb 12 08:02:33 CET 2009

The 'specified module' is specified in a pop-up (but not on Win 2000 
ans sometimes it gets hidden): this is a Windows error message, and 
confuses many people.

You need Sun Jave installed and in your path, and you need a 32-bit 
Java, not a 64-bit one.  My guess is that the problem is one of the 
conditions of the previous sentence.

On Wed, 11 Feb 2009, charis wrote:

> Hello.
> I am trying to load the rJava package in R-2.7.2 (Windows XP 64-bit RGui)

I presume it it 32-bit Rgui running on 64-bit Windows XP frpm he info 

> and get the following error message even though the mentioned .dll file is
> located at the directory listed in the error message. I have tried to
> uninstall and reinstall the package but that does not resolve the problem.
> Then uninstallation and re-installation of R did not resolve the issue
> either. Any suggestions are appreciated. charis.
> <R Console>
>> library(rJava)
> Error in inDL(x, as.logical(local), as.logical(now), ...) :
>  unable to load shared library 'C:/R/R-2.7.2/library/rJava/libs/rJava.dll':
>  LoadLibrary failure:  The specified module could not be found.
> Error : .onLoad failed in 'loadNamespace' for 'rJava'
> Error: package/namespace load failed for 'rJava'
>> sessionInfo()
> R version 2.7.2 (2008-11-24)
> i386-pc-mingw32
> locale:
> LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
> States.1252;LC_MONETARY=English_United
> States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
> attached base packages:
> [1] stats     graphics  grDevices datasets  tcltk     utils     methods
> base
> other attached packages:
> [1] Matrix_0.999375-17 lattice_0.17-17    filehash_2.0       svSocket_0.9-5
> TinnR_1.0.2        R2HTML_1.59        Hmisc_3.4-4        RProbase_0.1-0
> loaded via a namespace (and not attached):
> [1] cluster_1.11.11 grid_2.7.2      svMisc_0.9-5    tools_2.7.2
> </R Console>
> --
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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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