package or namespace load failed for ‘rJava’

[SandraDuenas]

Hi,
I am trying to load the rJava package in R and get the error shown below.

Just a note: I have Windows 8.1, already installed Java SDK and Java for Windows 8 with update 45, installed R 2 and I'm using R Studio latest version. Updated the System path to include the bin directory where Java SDK was installed, tested it successfully via the Command prompt. Downloaded the latest package of rJava_0.9-7.zip and unzip the files in the R Working directory and in the win 3.2 directory that R goes to when it runs the library(rJava) command.

But nothing seems to work. If anyone has a solution to the issues below, please let me know at sandraduenas2013@u.northwestern.edu. Thank you!

install.packages("rJava")
Installing package into ‘C:/Users/Sandra/Documents/R/win-library/3.2’
(as ‘lib’ is unspecified)
trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.2/rJava_0.9-6.zip'
Content type 'application/zip' length 761928 bytes (744 KB)
downloaded 744 KB

package ‘rJava’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
C:\Users\Sandra\AppData\Local\Temp\RtmpkxFfsn\downloaded_packages

library(rJava)
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: inDL(x, as.logical(local), as.logical(now), ...)
error: unable to load shared object 'C:/Users/Sandra/Documents/R/win-library/3.2/rJava/libs/x64/rJava.dll':
LoadLibrary failure: The specified module could not be found.

Error: package or namespace load failed for ‘rJava’

[SandraDuenas]

I found the solution to this issue, it turned out that the automatic installation of Java 8 was being done into the folder C:\Program Files (x86)

I went ahead and uninstalled all Java from my laptop and then manually installed the Java 8 version into the C:\Program Files\ folder (which is for 64-bit, and then when I re-ran the install.packages and library for the RJDBC, it automatically installed the rJava package.

So, the issue was due to how the automatic (not manual) installation of Java 8 was originally done in my laptop, incorrect default folder for the install.

So, this issue is closed.

[s-u]

This seems more like a common Java architecture mismatch - x86 target means 32-bit Java, but you're running 64-bit R. You must have the corresponding Java for your R (so 64-bit Java for 64-bit R).