Can't install rJava on ubuntu system

Question

I've seen a few posts related to this...but all the suggested solutions ive seen dont seem to work....I am running R in an EC2 instance and ran the following commands to try and install rJava but to no avail...any help would be greatly appreciated.

 > install.packages("rJava")  Installing package(s) into ‘/home/ubuntu/R/library’  (as ‘lib’ is unspecified)  trying URL 'http://cran.stat.nus.edu.sg/src/contrib/rJava_0.9-3.tar.gz'  Content type 'application/x-gzip' length 537153 bytes (524 Kb)  opened URL  ==================================================  downloaded 524 Kb  * installing *source* package ‘rJava’ ... ** package ‘rJava’ successfully unpacked and MD5 sums checked checking for gcc... gcc -std=gnu99 checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables...  checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc -std=gnu99 accepts -g... yes checking for gcc -std=gnu99 option to accept ISO C89... none needed checking how to run the C preprocessor... gcc -std=gnu99 -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/wait.h that is POSIX.1 compatible... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for string.h... (cached) yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking for unistd.h... (cached) yes checking for an ANSI C-conforming const... yes checking whether time.h and sys/time.h may both be included... yes configure: checking whether gcc -std=gnu99 supports static inline... yes checking whether setjmp.h is POSIX.1 compatible... yes checking whether sigsetjmp is declared... yes checking whether siglongjmp is declared... yes checking Java support in R... present: interpreter : '/usr/bin/java' archiver    : '' compiler    : '' header prep.: '' cpp flags   : '' java libs   : '-L/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server -L/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64 -L/usr/lib/jvm/java-6-openjdk-amd64/jre/../lib/amd64 -L/usr/java/packages/lib/amd64 -L/usr/lib/x86_64-linux-gnu/jni -L/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -L/usr/lib/jni -L/lib -L/usr/lib -ljvm' configure: error: Java Development Kit (JDK) is missing or not registered in R Make sure R is configured with full Java support (including JDK). Run R CMD javareconf as root to add Java support to R.  If you don't have root privileges, run R CMD javareconf -e to set all Java-related variables and then install rJava.  ERROR: configuration failed for package ‘rJava’ * removing ‘/home/ubuntu/R/library/rJava’ Warning in install.packages :   installation of package ‘rJava’ had non-zero exit status  The downloaded source packages are in     ‘/tmp/RtmpaEiskU/downloaded_packages’ > system("sudo R CMD javareconf") Java interpreter : /usr/bin/java Java version     : 1.6.0_24 Java home path   : /usr/lib/jvm/java-6-openjdk-amd64/jre Java compiler    : not present Java headers gen.:  Java archive tool:  Java library path: $(JAVA_HOME)/lib/amd64/server:$(JAVA_HOME)/lib/amd64:$(JAVA_HOME)/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -L$(JAVA_HOME)/lib/amd64 -L$(JAVA_HOME)/../lib/amd64 -L/usr/java/packages/lib/amd64 -L/usr/lib/x86_64-linux-gnu/jni -L/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -L/usr/lib/jni -L/lib -L/usr/lib -ljvm JNI cpp flags    :   Updating Java configuration in /etc/R Done.  > install.packages("rJava") [same as before, just skipping to the error parts...]  java libs   : '-L/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server -L/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64 -L/usr/lib/jvm/java-6-openjdk-amd64/jre/../lib/amd64 -L/usr/java/packages/lib/amd64 -L/usr/lib/x86_64-linux-gnu/jni -L/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -L/usr/lib/jni -L/lib -L/usr/lib -ljvm' configure: error: Java Development Kit (JDK) is missing or not registered in R Make sure R is configured with full Java support (including JDK). Run R CMD javareconf as root to add Java support to R.  If you don't have root privileges, run R CMD javareconf -e to set all Java-related variables and then install rJava.  ERROR: configuration failed for package ‘rJava’ * removing ‘/home/ubuntu/R/library/rJava’ Warning in install.packages :   installation of package ‘rJava’ had non-zero exit status  The downloaded source packages are in     ‘/tmp/RtmpaEiskU/downloaded_packages’ > sessionInfo() R version 2.15.1 (2012-06-22) Platform: x86_64-pc-linux-gnu (64-bit)  locale:  [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C         LC_TIME=C            LC_COLLATE=C          [5] LC_MONETARY=C        LC_MESSAGES=C        LC_PAPER=C           LC_NAME=C             [9] LC_ADDRESS=C         LC_TELEPHONE=C       LC_MEASUREMENT=C     LC_IDENTIFICATION=C   attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base       loaded via a namespace (and not attached): [1] tools_2.15.1 

Answer 1

The easiest way to get rJava on Ubuntu is to install it from the repositories instead of trying to install it directly from CRAN. From the command line this should do the trick

sudo apt-get install r-cran-rjava 

Answer 2

I'm facing the same problem at the moment but the solution doesn't seem to work anymore. Running

sudo apt-get install r-cran-rjava 

gives me

The following packages have unmet dependencies:  r-cran-rjava : Depends: r-api-3.4 

I'm on Linux Mint Tessa 19.1 und I'm using R version 3.6.1 (2019-07-05)