How do I change my default Java to Ubuntu?

Choose your default Java Version. sudo update-java-alternatives -s $(sudo update-java-alternatives -l | grep 8 | cut -d ” ” -f1) || echo ‘. ‘ It will automatically fetch any java 8 version available and set it using the command update-java-alternatives .

How do I switch Java on Ubuntu?

To switch between installed java versions, use the update-java-alternatives command. … where /path/to/java/version is one of those listed by the previous command (e.g. /usr/lib/jvm/java-7-openjdk-amd64 ).