Checks if Java is installed.

This function checks to see if the JAVA_HOME environment variable is set. If not it will check to see if Java is installed on some platforms.

Usage

check_java()

Value

TRUE if JAVA_HOME is set.

Details

To install Java on Mac (assuming Homebrew is installed):

brew tap adoptopenjdk/openjdk
brew install --cask adoptopenjdk8

To install Java on Ubuntu run:

sudo apt-get install openjdk-8-jdk