I have installed clean AcademiX 2 and installed Scilab from repository here with

sudo apt-get update
sudo apt-get install scilab

After installation I tried to launch it from GUI (Applications → Other → Scilab) – it does not start.
Then I tried to launch it from terminal with scilab command. Terminal output is as follows:

$ scilab
/usr/bin/scilab-bin: error while loading shared libraries: libjava.so: cannot open shared object file: No such file or directory
so it can\’t find Java. I reported bug 1762999 about this problem.

I checked existence of libjava.so:

$ dpkg -S libjava.so
openjdk-11-jre-headless:amd64: /usr/lib/jvm/java-11-openjdk-amd64/lib/libjava.so
so it is in place.

What should I do to get Scilab 6.0.1 working on AcademiX 2?