Trying to install the rJava package on R, on my 14.10 ubuntu, using this code

if (!require(rJava)) install.packages('rJava')

got few errors related to java including jni problems, after reinstalling the jdk, and tried to run the same code again, got that error

Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/usr/local/lib/R/site-library/rJava/libs/rJava.so':
  libjvm.so: cannot open shared object file: No such file or directory
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/usr/local/lib/R/site-library/rJava’
Warning in install.packages :
  installation of package ‘rJava’ had non-zero exit status
The downloaded source packages are in
‘/tmp/RtmpfFjrp0/downloaded_packages’
Warning message:
In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,  :
there is no package called ‘rJava’

looked for solutions, to find just about everyone suggesting (for x64) to execute those commands

export LD_LIBRARY_PATH=/usr/lib/jvm/java-8-oracle/lib/amd64:/usr/lib/jvm/java-8-oracle/jre/lib/amd64/server
sudo R CMD javareconf 

but that didn't work, is there anything else I can do? I will provide any needed details

I was getting the same error when I was trying to load rJava in RStudio. The following solution worked for me

1) sudo rstudio-server stop
2) export LD_LIBRARY_PATH=/usr/lib/jvm/jre/lib/amd64:/usr/lib/jvm/jre/lib/amd64/default
3) sudo rstudio-server start

After performing the above steps, I was able to run the following successfuly in RStudio

> library("DBI")
> library("rJava")
> library("RJDBC")