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)

Answer 3

I had

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

I solved with

sudo apt-get update
sudo apt-get install default-jre
sudo apt-get install default-jdk

and

sudo apt-get install r-cran-rjava

Answer 4

This is worked for me (Linux Mint "Ulyana")

in terminal:

sudo -i
R CMD javareconf

then in RStudio:

install.packages("rJava", dependencies = TRUE)

Answer 5

sudo apt-get install r-cran-rjava 

didn't work in R Studio, so I had to use the terminal but then worked perfectly for me.