Java

http://java.sun.com

J2ME

http://java.sun.com/j2me/index.jsp

MIDP Code Samples

http://developers.sun.com/techtopics/mobility/midp/samples/

J2ME in a Nutshell

http://www.oreilly.com/catalog/j2meanut/ or on Safari http://safari.oreilly.com/?XmlId=0-596-00253-X