J2ME wireless toolkit 2.2 help

i write the code and build it and run it.

when i got to run the application on the emulator i get an error

Unable to create MIDlet dfa

java.lang.ClassNotFoundException: dfa

at com.sun.midp.midlet.MIDletState.createMIDlet(+14)

at com.sun.midp.midlet.Selector.run(+22)

please tell me what i'm doing wrong

this happens with all the code i've tried.

th edemos are running fine so its something stupid i've done wrong

[470 byte] By [Talisan] at [2007-9-30 22:10:46]