Scope of the Java System Properties

Question

In Java we use System.setProperty() method to set some system properties. According to this article the use of system properties is bit tricky.

System

Answer 1

System properties are per-process. This means that they are more global than static fields, which are per-classloader. So for instance, if you have a single instance of Tomcat running multiple Java webapps, each of which has a class com.example.Example with a static field named globalField, then the webapps will share system properties, but com.example.Example.globalField can be set to a different value in each webapp.