R: rJava package install failing

Question

When installing rJava using the install.packages(\"rJava\") command I get the following error:

checking Java support in R... present:
interprete         


        

Answer 1

Turns out my problem was an issue with my JAVA_HOME environment variable. Yes, shocking I know. My initial setting for PATH and JAVA_HOME looked like this:

export JAVA_HOME=/usr/lib/jvm/java-6-sun
export PATH=$PATH:$JAVA_HOME/bin

And I added /jre so it now looks like this:

export JAVA_HOME=/usr/lib/jvm/java-6-sun/jre
export PATH=$PATH:$JAVA_HOME/bin

Everything in Java seemed to work fine without the /jre but rJava would not. Odd.

Answer 2

The problem was rJava wont install in RStudio (Version 1.0.136). The following worked for me (macOS Sierra version 10.12.6) (found here):

Step-1: Download and install javaforosx.dmg from here

Step-2: Next, run the command from inside RStudio:

install.packages("rJava", type = 'source')

Answer 3

On Arch Linux, I needed to install openjdk-src to get a JNI path working.

In other words, these are the packages I needed to install before sudo R CMD javareconf ran successfully:

local/jdk-openjdk 14.0.2.u12-1
    OpenJDK Java 14 development kit
local/jre-openjdk 14.0.2.u12-1
    OpenJDK Java 14 full runtime environment
local/jre-openjdk-headless 14.0.2.u12-1
    OpenJDK Java 14 headless runtime environment
local/openjdk-src 14.0.2.u12-1
    OpenJDK Java 14 sources

Answer 4

That is how I make it work :

In Linux (Ubuntu 16.04)

sudo apt-get install default-jre
sudo apt-get install default-jdk
sudo R CMD javareconf

in R:

install.packages("rJava")

Answer 5

I was facing the same problem while using Windows 10. I have solved the problem using the following procedure

1. Download Java from https://java.com/en/download/windows-64bit.jsp for 64-bit windows\Install it
2. Download Java development kit from https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html for 64-bit windows\Install it
3. Then right click on “This PC” icon in desktop\Properties\Advanced system settings\Advanced\Environment Variables\Under System variables select Path\Click Edit\Click on New\Copy and paste paths “C:\Program Files\Java\jdk1.8.0_201\bin” and “C:\Program Files\Java\jre1.8.0_201\bin” (without quote) \OK\OK\OK

Note: jdk1.8.0_201 and jre1.8.0_201 will be changed depending on the version of Java development kit and Java

4. In Environment Variables window go to User variables for User\Click on New\Put Variable name as “JAVA_HOME” and Variable value as “C:\Program Files\Java\jdk1.8.0_201\bin”\Press OK

To check the installation, open CMD\Type javac\Press Enter and Type java\press enter It will show

In RStudio run

Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jdk1.8.0_201")

Note: jdk1.8.0_201 will be changed depending on the version of Java development kit

Now you can install and load rJava package without any problem.

Answer 6

below is one of my answers on another post - error: unable to load installed packages just now
(this is also relevant to this question)

For Linux(Ubuntu) users: If you have oracle-java (7/8) installed. It'll be at this location /usr/lib/jvm and sudo access is required.

Create the file /etc/ld.so.conf.d/java.conf with the following entries:

/usr/lib/jvm/java-8-oracle/jre/lib/amd64
/usr/lib/jvm/java-8-oracle/jre/lib/amd64/server

(Replace java-8-oracle with java-7-oracle depending on your java version)

Then:

sudo ldconfig

Restart RStudio and then install the rJava package.