When installing rJava using the install.packages(\"rJava\")
command I get the following error:
checking Java support in R... present:
interprete
This worked for me on Ubuntu 12.04 and R version 3.0
cd /usr/lib/jvm/java-6-sun-1.6.0.26/include
this is the directory that has jni.h
Next create a soft link to another required header file (I'm too lazy to find out how to include more than one directory in the JAVA_CPPFLAGS option below):
sudo ln -s linux/jni_md.h .
Finally
sudo R CMD javareconf JAVA_CPPFLAGS=-I/usr/lib/jvm/java-6-sun-1.6.0.26/include