PSPKVM is a K virtual machine - an extremely compact Java Virtual Machine - that allows users to run applications and games created using Java 2 Platform Micro Edition. These games and applications are usually released on mobile phones and PDAs.
According to homebrew dev sleepper, the supported APIs (Application Programming Interface) are midp2.0, a part of the Nokia UI, and WMA2.0.

http://lh3.google.com/pspkvm/R4OFpAuDgVI/AAAAAAAAABo/XqM34iMTqR0/snap0001.jpghttp://dl.img.qj.net/uploads/files_module/pictures/15969_psp-homebrew-game-mobile-cell-phone-java-download-1.jpg

Mainpage:
http://www.pspkvm.com
Usage:
Start PSPKVM and select a .jar file in the Memory stick to run.
The defualt device is SE K800i, user can press Triangle to select another device, such as Nokia S60, Motolora Triplets, and etc, the last selected device will be loaded on next starting. Key mapping:

Up -> NUM2
Left -> NUM4
Right -> NUM6
Down -> NUM8
AnalogStick -> D-pad
Cross -> NUM0
Square -> NUM1
Triangle -> NUM3
Circle -> NUM5
L+Square -> NUM7
L+Triangle -> NUM9
L+Circle -> SELECT
L+Cross -> CLEAR
SELECT -> L-Soft
START -> R-Soft
L -> *
R -> #
L+R+Cross -> Red-key(terminate current application)

Installation:
1. Of course, Extract ZIP File. Copy and Paste "PSPKVM" directory inside MS:/PSP/GAME folder.
2. Put your JAR files anywhere in your MS. And you can just browse them through the PSPKVM UI.

Download Links:
PSPKVM v0.0.9
http://www.mediafire.com/?ffqzbmvyzjj

http://rapidshare.com/files/91236807/15891_PSPKVM_v0.0.9.zipPSPKVM v0.10 - Now With Sound Supporthttp://dl.qj.net/dl.php?fid=15969
http://rapidshare.com/files/92568404/PSPKVM_v010_withSoundSupport_llewelyn.zip

nice app, i have a lot of java games, will post the results shortly,

Here's Gameloft Games compatibility List

All games are tested with SE K800i/S700 version, and not perform a full test.

1VS100 OK
2006RealFootball OK
AirStrike1944 OK
American_Popstar OK
AmericanGangster OK(loading slowly)
AmericasArmy_Full OK(0.0.8)
AND1_Street_Basketball OK
ASPHALT_Sakura OK
Asphalt2 OK(0.0.8)
Asphalt3 OK
Assassin_sCreed OK(run slowly)
BBD not start
Beowulf crash
BIA_Full OK
BigRangeHunting OK
BikiniVolleyball OK
Block_Breaker_Deluxe_FULL OK
BrainChallenge OK
BrainChallengeVol2 not start
BubbleBash OK(0.0.8)
Catchphrase OK
Catz OK
ChessMaster OK
ChristmasMidnightPool OK
CKQ OK
Crazy_Campus OK(0.0.8)
Cricket OK
CSI_MIAMI OK
DesperateHousewives OK
DH4 OK
DiamondRush OK(0.0.8)
DJPB2007 OK
Dogz OK
DominoFever OK
DOND OK
Driver OK(0.0.8)
EverydayEnglishTrainer OK
FootballParty OK
FullHouseBingo OK(0.0.8)
Gameloft_Catalogue freeze
Gameloft_Catalogue2 freeze
Gameloft_Catalogue3 freeze
Gangstar OK
GoldenBalls OK
GRAW2 OK
Heroes OK
HRA OK
IbizaBeachParty OK
KingKong OK
KingKongPinball OK
KobeBryantProBasketball2008 OK
LasVegasNights OK
LFPFutbol2006 OK
LOST OK(loading slowly)
Lumines OK
MBowling OK
MC_AOG OK
MegacityEmpireNewYork OK
Meteos OK
MI3 OK
Miami_Nights OK
MidnightCasino OK
MidnightPoker OK
MidnightPool OK
MightAndMagic OK(0.0.8)
Million_Dollar_Poker not start
MiniGolfRevolutions OK
MM2 OK
MMP OK
NavalBattle OK(0.0.8)
NitroStreetRacing freeze
NYNights OK
Oktoberfest OK
OpenSeason OK
PanzerGeneral not start
ParisHiltonDQ OK
Petz OK
PiratesOfTheSevenSeas OK
PlatinumKakuro OK
PlatinumMahjong not start
PlatinumSolitaire OK(0.0.8)
PlatinumSudoku OK
POP3 OK
PopClassic OK
ProGolf2007 OK
PubMania OK
R6VEGAS OK
RainbowSixLockDown OK
Rayman3 OK
RaymanKart OK(0.0.8)
RaymanRR OK
RealFootball2007 OK
RealFootball2008 OK
RealFootballManager OK(loading slowly)
RealRugby OK
ReggieBushProFootball2008 OK(loading slowly)
RiseofLostEmpires OK(0.0.8)
RocknBlocks not start
SC3 OK
SC4 OK
SCU OK
Sexy_Poker_Top_Models_FULL OK(run slowly)
Sexy_Poker_Top_Models_TOPLESS OK(run slowly)
SexyBlocks_Full OK(0.0.8)
SexyPoker2006_FULL OK
SexyPoker2006_TOPLESS OK
SexyPokerManga_FULL OK
SexyPokerManga_TOPLESS OK
SexyVegas OK(0.0.8)
ShrekTheThird OK
Siberian_Strike OK
Sma**** not start
Surfsup OK
TennisOpen2007 OK
TheOC OK
TheSettlers crash
TropicalMadness OK
TS OK
UltimateStreetFootball OK
UndergroundStreetSoccer OK
VJGolf2005 OK
WarOfTheWorlds OK
XIII_2 OK(loading slowly)
XtremeDirtBike OK(run slowly)

cool app :) thanks.

Ps: Is there any app to run nokia symbian apps/games by anychance?

hmmmm...haven't heard of any at the moment...but maybe someday in the future they'll develop a symbian OS emulator...and that would be very great of course....

It'll be pretty hard to make it for a guess, though Symbian is an open operating system, so it could be possible... Love to see it happen

Updated:PSPKVM v0.10 - Now With Sound Support

P.S. Hey And I didn't knew until this version, many games are playable at fullscreen...i mean at 480x272....awesome...

I have downloaded the zip PSPKVM v0.10 from here. Should I unzip it and create a new folder or just put the zip file to MS:/PSP/GAME folder ? Help pls

I have downloaded the zip PSPKVM v0.10 from here. Should I unzip it and create a new folder or just put the zip file to MS:/PSP/GAME folder ? Help pls
You need to unzip the archive attached here, then you should find PSPKVM folder. Copy that to MS:/PSP/GAME.

Awesome man..... Thanks...