How to import .txt file to .pdb

Hi all
I am doing a project on Handwriting recognition for my native language and I am using SuperWaba to develop my application. I found an example code with SuperWabaSDK which imports .txt file to .pdb but since the code has java.io and java.util packages it could not run. I asked someone and he told me to set the SuperWaba.jar file in my ClassPath and I did but still it gives me an error \"Warp/Exegen error: ...\" and it could not create the .pdb file so that I cannot syncronize to my PDA.
So please help me on how to solve this problem.
Thank you
Cheers