The Free On-line Dictionary of Computing (30 December 2018):

Java 2 Platform, Standard Edition
J2SE
Java 2
Java 2 Platform

    (J2SE) Sun's Java programming
   platform aimed at network-oriented enterprise applications.
   J2SE comprises the Java 2 Software Development Kit (SDK) and
   the Java 2 Run-Time Environment.

   See also the Micro edition J2ME and the Enterprise edition
   J2EE.

   Java 2 Platform (http://javasoft.com/j2se/).

   (2000-04-20)