How to set the default Java version on Linux

Written by Ian Carnaghan · 25 sec read >
  1. Open a new Terminal Window
  2. Execute the following command:
    sudo update-alternatives --config java
  3. Output similar to the below will show:
    There are 4 choices for the alternative java (providing /usr/bin/java).
      Selection    Path                                            Priority   Status
      0            /usr/lib/jvm/java-8-oracle/jre/bin/java          1092      auto mode
    * 1            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      manual mode
      2            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode
      3            /usr/lib/jvm/java-8-oracle/jre/bin/java          1092      manual mode
      4            /usr/lib/jvm/java-9-openjdk-amd64/bin/java       1091      manual mode
    Press <enter> to keep the current choice[*], or type selection number:
  4. Enter the number next to your preferred version and hit the Enter key
  5. Now the default Java version will be changed.

Last Updated On April 07, 2018
Written by Ian Carnaghan
I am a software developer and online educator who likes to keep up with all the latest in technology. I also manage cloud infrastructure, continuous monitoring, DevOps processes, security, and continuous integration and deployment. Profile

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