VSMC still requires Java 8 to run. You will need to install it, then, if you don't want to have such ancient version set as your main one, you can specify which binary to use when launching VSMC from terminal. For example, I have OpenJDK version installed and I'm launching VSMC like this:
/usr/lib/jvm/java-8-openjdk/bin/java -jar vsmodelcreator.jar