Next lets install Java on the Pi. We recommend using Oracle Java v8. This can be accomplished by using the following command
sudo apt-get install oracle-java8-jdk
Type "y" to install the program and wait for apt-get to do it’s thing.
Once it’s finished, type java -version
to test that it installed correctly. You should get a message like
java version "1.8.0_65" Java(TM) SE Runtime Environment (build 1.8.0_65-b17) Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)