Hi Ransika,
I'm afraid I don't know anything about J2ME. You may be better off posting your question in the J2ME forum.
However, if a MIDlet is the J2ME equivalent of a Servlet (!?
?!) then this may help: if you wanted to call a servlet (called Servlet2) from a servlet, passing additional parameters, you would do the following:
Maybe you can translate that to J2ME somehow?
Jules