I installed java downloading the relative file from the Oracle site, and following the manual guide I found on http://wiki.ubuntu-it.org . I have it and it works.
Now I'm trying using
javadoc with the following command:
$ javadoc -version -private -d /tmp/Docs -sourcepath src -subpackages it
But I receive this error message:
The program 'javadoc' can be found in the following packages: * default-jdk * gcj-5-jdk * openjdk-8-jdk-headless * gcj-4.8-jdk * gcj-4.9-jdk * openjdk-9-jdk-headless Try: sudo apt install <selected package>
As I already installed java, how should I proceed to get javadoc too? I'm afraid any of the packages suggested could result in some problems as I already have a jdk.
Note: I would prefer not to use openjdk.