# Installing rJava on Ubuntu

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Installing the rJava package on Ubuntu is not quite as simple as most other R packages. Some quick notes on how to do it.

- Install the Java Runtime Environment (JRE).
sudo apt-get install -y default-jre

- Install the Java Development Kit (JDK).
sudo apt-get install -y default-jdk

- Update where R expects to find various Java files.
sudo R CMD javareconf

- Install the package.
> install.packages("rJava")

- If you have a RStudio session open, then exit and restart it. This is important (a running RStudio session will not pick up these changes!).

Sorted!

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