Java EE 7 Application Servers vs. Plain "Hello World" -- Or What Is The Memory Overhead

What is the memory overhead of Java EE 7 application servers like WebLogic, WebSphere Liberty Profile, Payara, WildFly and TomEE with stock configuration in comparison to a "hello, world" Java 8 application (nano)?

In the episode 54 from the on-demand workshop Java EE 7 Microservices I'm measuring the memory overhead and calculating the costs.

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