For security reasons I want to remove/uninstall all instances of Java from my computer and prevent it from being installed again. On Windows computers I would simply just not install the software found at this webpage: http://java.com/en/download/manual.jsp
But on Ubuntu I've noticed that Java seems to have gotten installed on my system without my explicitly doing it and it shows in several ways, e.g., through plugins, etc.
What Java software on ubuntu is the equivalent of having installed the software at http://java.com/en/download/manual.jsp on Windows? Will uninstalling one "Java-named app" uninstall everything Java related on my computer?
How do I blacklist Java so that it isn't installed again?