J2ME

I know bit j2se and j2ee..but i don't know anything about j2me.
Suddenly for some reasonable purpose i look into j2me area...
It looks amazing and also bit easy for the guys those who are working in j2ee(compile ,run things are taken care by wireless toolkit)..but it doesn't have(Even MIDP2.0 ) so many features what we had in j2se or j2ee...MIDP API lacks lot(anyway it's an emerging technology)..

and also one more problem is , all major players(like NOKIA,SONY...etc)have their own SDK version for developing javabased games...so now java peoples no way to say "compile once and run anywhere"..(for j2me).

I refered the following URLs for my references....

http://www.stardeveloper.com/articles/display.html?article=2002121101&page=6
http://www.developer.com/java/j2me/article.php/10934_1561591_4
http://java.sun.com/j2me/docs/alt-html/midp-style-guide7/screen-comp.html
http://developers.sun.com/techtopics/mobility/midp/articles/ui/
http://www.oreilly.de/catalog/wirelessjava/chapter/
http://www-106.ibm.com/developerworks/wireless/library/wi-j2me/
http://www.ultimaterepository.com/bykeyword/j.htm
http://archives.java.sun.com/cgi-bin/wa?A2=ind0203&L=kvm-interest&F=&S=&P=22514
http://cephas.net/blog/j2me/
http://www.microjava.com/articles/techtalk/midp2_games
http://www.corej2me.com/DeveloperResources/sourcecode/lowlevel_UI/randomLines/index.shtml