OpenJDK and update-alternatives command

Question

On Ubuntu 20.04 LTS, I've done:

sudo apt-get install openjdk-{8,11,14}-{jdk,source,doc}

Now I often use the commands

sudo update-alternatives --config java
sudo update-alternatives --config javac
sudo update-alternatives --config javadoc

...and maybe a few others, but when I type this command:

ls -l /etc/alternatives/*j*

I still find many Java-related commands which have not been affected by the above sequence of update-alternatives commands.

What is the full list of update-alternatives commands that will change every single Java-related command to a specified Java version?

score 2 · Accepted Answer · edited Sep 17 '20 at 08:57

While this can be a problem for many software, this is a specific problem for Java on Ubuntu. Fortunately there is a specific solution, a program, call:

update-java-alternatives

I have just use it the following way:

sudo update-java-alternatives -s java-1.14.0-openjdk-amd64

It have change the alternatives of most of the Java related tools.

More comment on this subject can be found on askubuntu for a similar question. This question is also related, and an answer link to the same program.

OpenJDK and update-alternatives command

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