What are the differences between private jre and public jre?

Question

What are the differences between private jre and public jre? Is there some official paper about this topic?

I didn\'t find any question on SO about this topic. Nor I was

Answer 1

The answer is very simple: the public JRE is the one users will use if they want to run anything Java. The private JRE is a different installation that one can use, if the explicitly execute that Java binary (e.g. on Windows: "C:\Programs\Java\MyJava\bin\java.exe").