J2EE 1.4 or officially: "JSR 151: JavaTM 2 Platform, Enterprise Edition 1.4 (J2EE 1.4) Specification" was released at 24 Nov, 2003 and was designed to be used with JDK 1.4, J2EE 1.3 was released at 24 September 2001 and is more than 9 years old now.
In JDK 1.4 there were no annotations available, so you had to configure everything with XML. J2EE 1.4 is more Configuration Over Convention, than the current - more reasonable opposite principle of Configuration by Exception or Convention over Configuration.
If I read or hear "J2EE" I always have to think about xdoclet with about 50 lines of XML, a Home Interface, Remote Interface and an unrelated Bean class just to implement a helloWorld() method. ...with Java EE 6 a helloWorld() takes exactly one line of code - as it should be.
Online workshop: Java EE 7 Bootstrap