Java Spring guides

https://www.youtube.com/watch?v=WDlifgLS8iQ&list=PLU2ftbIeotGoGSEUf54LQH-DgiQPF2XRO&index=3


https://spring.io/guides/gs/rest-service/

https://spring.io/guides/gs/securing-web/

http://logging.apache.org/log4j/2.x/manual/configuration.html

https://attacomsian.com/blog/spring-boot-console-application