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

Java 2 Software Development Kit
Java 2 SDK

    (Java 2 SDK) Sun's tools to develop
   Java applications, part of the Java 2 Platform.

   Versions prior to 1.2 were known as the Java Development Kit
   (JDK).

   (http://javasoft.com/j2se/).

   (2000-04-20)