i've install a java game on my qtek7070 and it's work fine
after install of java machine open MIDP-AMS and press menu choose action and then install now it will ask you to write url to download java programme write url ex:
http://www.zedge.no/java/games/006.jar to download game see screenshot after downloding it will ask you like (that midlet not come from trusted source are you sure to install it ) just press menu action and yes now it will install game
and to play press menu and launch Midlet just use action key to play this game
or download *.jar and *.jad files from internett and move these to phone to folder IPSM/My Documents/Midlet/ by using active sync then use explorer on your phone like smart explorer and go to IPSM/My Documents/Midlets folder and click on *.jad file and it will install java app
IPSM is called Storage on sp2003