Java Development Tools

Hi...........(:-

Good Afternoon.....,,,,

I'm developing an E-Book Reader application using J2ME Midlets.
I'm trying to read two file formats such as RTF(Rich Text Format) and Zip Files.
I'm very new to the J2ME platform.
Can Any suggest me which classes or packages supports for reading the above
two formats Please provide some helpfull information.

Thanks in Advance.