History of Java Card

https://en.wikipedia.org/wiki/Java_Card

Developer Documentation

https://docs.oracle.com/en/java/javacard/3.1/guide/using-classic-tools.html

Easier (maybe) to read Developer Guide

https://lig-membres.imag.fr/donsez/ujf/messi/sc/examples/javaworld/jw-07-javacard_p.html