GNU/Linux MX Installing Oracle Java JRE Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Oracle Java SE JRE in MX GNU/Linux Desktop.
And Oracle Java Runtime Environment for MX is software that Java Programs require to run correctly.
So it provides the Class Libraries and other Resources that a specific Java Program needs to run.
Currently, Oracle distribuite the Java Releases only in shape of JDK with the JRE included inside.

GNU/Linux MX Oracle Java JRE Installation Guide