Install OpenJDK :: Debian based systems

Let's configure your Debian based OS to use the OpenJDK 8.

Steps:

• On Linux terminal install OpenJDK 8 from a PPA repository.

sudo add-apt-repository ppa:openjdk-r/ppa

• Update System package cache and install.

sudo apt-get update
sudo apt-get install openjdk-8-jdk

• Use the following command - If you have more than one Java versions installed on your system to switch version

sudo update-alternatives --config java

• Verify if the correct JDK version is configured.

java -version

openjdk version "1.8.0_181"
OpenJDK Runtime Environment (build 1.8.0_181-8u181-b13-2~deb9u1-b13)
OpenJDK 64-Bit Server VM (build 25.181-b13, mixed mode)