[R] rJava is not loading

Prof Brian Ripley ripley at stats.ox.ac.uk
Thu Jun 6 08:19:50 CEST 2013

On 06/06/2013 00:38, Dimitri Liakhovitski wrote:
> Hello!
> I installed rJava and am trying to load it.
> library(rJava)
> Error : .onLoad failed in loadNamespace() for 'rJava', details:
>    call: fun(libname, pkgname)
>    error: No CurrentVersion entry in Software/JavaSoft registry! Try
> re-installing Java and make sure R and Java have matching architectures.
> Error: package or namespace load failed for ‘rJava’
> Any idea why?
> Background info:

But the posting guide asked for the output from sessionInfo(): we want 
to know what R knows it is running as, not why you think.

> Windows 7, 64-bit
> R version 3.0.1 (for 64-bit)
> I just installed the lastest Java: Java 7 Update 21

For the right architecture?

The message is crystal clear: you do not have a Java installed matching 
your R.  Most likely your Java is 32-bit and your R 64-bit or v.v.

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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