I have been coding JSP's for a few years now using scriptlets and beans. What should I focus on next? JSTL, Spring or something else? Opinions, thoughts and good arguments are much appreciated.

JavaServer Faces (JSF) is the Java standard technology for building component-based, event-oriented web interfaces. Like JavaServer Pages (JSP), JSF allows access to server-side data and logic. Unlike ...

Like other Java enterprise tools, Tomcat has migrated from the original Java EE specification to Jakarta EE. Tomcat 9 and earlier were based on Java EE; Tomcat 10 and later are based on Jakarta EE.