MySql database to servlet to j2me

[Ivy]

i am developing a mobile application which display data of the servlet that fetches data from the database. I have able to display data in servlet. But I can't use it in j2me. it appears in the emulator screen EXCEPTION
THE APPLICATION HAS UNEXPECTEDLY QUIT. CONTACT THE APPLICATION PROVIDER TO RESOLVE THE ISSUE. please help me.

When i run the mobile app, it shows
java.lang.IllegalArgumentException
at javax.microedition.lcdui.TextField.setCharsImpl(), bci=79
at javax.microedition.lcdui.TextField.<init>(), bci=99
at javax.microedition.lcdui.TextBox.<init>(), bci=23
at MarketSituation.FishingInfo.startApp(), bci=112
at javax.microedition.midlet.MIDletTunnelImpl.callStartApp(), bci=1
at com.sun.midp.midlet.MIDletPeer.startApp(), bci=7
at com.sun.midp.midlet.MIDletStateHandler.startSuite(), bci=269
at com.sun.midp.main.AbstractMIDletSuiteLoader.startSuite(), bci=52
at com.sun.midp.main.CldcMIDletSuiteLoader.startSuite(), bci=8
at com.sun.midp.main.AbstractMIDletSuiteLoader.runMIDletSuite(), bci=161
at com.sun.midp.main.AppIsolateMIDletSuiteLoader.main(), bci=26


..what could be wrong with my system? ty