Install the rJava Package in R

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The most convenient way is to install the corresponding Linux package if exists.

sudo apt-get install r-cran-rjava

However, this Linux package is often outdated. Follow the steps below if you’d rather install rJava manually.

1. Install OpenJDK and configure Java.

    sudo apt-get install openjdk-7-*
    sudo R CMD javareconf

2. Install the rJava package in R.

    install.packages("rJava").

If it does not work, please set the JAVA_HOME environment variable manually in step 1 and then try step 2 again.

export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64/jre