Jakarta EE 9 is out, and with it the namespace change from javax.*
to jakarta.*
. When we talk about the namespace change, we mostly talk about changing the import statements in your code when migrating to Jakarta EE 9. But there is more to it. I have created a slightly more advanced “Hello, World” application in order to highlight a couple more. I won’t claim that these are all areas, but I hope I have touched most…