Step 1: Install OpenJDK 8
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk
For more information on how to install Java, see How to install Java from Apt-Get on Ubuntu 16.04
Step 2. Make Version 8 Default Java
Check which jdk versions are available on your system.
$ sudo update-java-alternatives
you should see something like:
java-1.7.0-openjdk-amd64 1071 /usr/lib/jvm/java-1.7.0-openjdk-amd64
java-1.8.0-openjdk-amd64 1069 /usr/lib/jvm/java-1.8.0-openjdk-amd64
Change the default Java version:
$ sudo update-java-alternatives
Step 3. Updating SmartGit Configuration
smartgit.vmoptions
$ nano ~/.smartgit/smartgit.vmoptions
:
jre=/usr/lib/jvm/java-1.8.0-openjdk-amd64/