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.
Right from day one, the standard format for packaging Java programs was the Java ARchive, or JAR file for short. There's nothing particularly interesting about a JAR file. At its heart, it's simply a ...