references

• https://docs.spring.io/spring/docs/current/spring-framework-reference/
• https://docs.spring.io/spring/docs/5.0.0.RC2/spring-framework-reference/overview.html
• https://www.tutorialspoint.com/spring/index.htm
• https://www.baeldung.com/spring-inject-prototype-bean-into-singleton

security module

• https://www.journaldev.com/8669/spring-4-security

db

• https://www.geeksforgeeks.org/sql-ddl-dql-dml-dcl-tcl-commands/

spring mvc

• https://www.youtube.com/watch?v=-JRx44xHTis

ServletContext Vs ApplicationContext

• https://www.baeldung.com/spring-web-contexts -- super important

• https://howtodoinjava.com/spring5/webmvc/spring-dispatcherservlet-tutorial/ -- important

• https://www.javatpoint.com/servletcontext

• http://www.codesenior.com/en/tutorial/Spring-ContextLoaderListener-And-DispatcherServlet-Concepts

• https://stackoverflow.com/questions/31931848/applicationcontext-and-servletcontext

• https://stackoverflow.com/questions/3652090/difference-between-applicationcontext-xml-and-spring-servlet-xml-in-spring-frame

• https://howtodoinjava.com/spring-mvc/contextloaderlistener-vs-dispatcherservlet/

• https://stackoverflow.com/questions/31931848/applicationcontext-and-servletcontext

• http://www.jcombat.com/spring/spring-container-basics-dispatcher-servlet-and-servlet-listener

• https://www.codejava.net/java-ee/servlet/apache-commons-fileupload-example-with-servlet-and-jsp