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Editorial Team
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Asked: 2026-05-13T20:21:04+00:00

I am looking for a library that can run on Java ME (Foundation Profile

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I am looking for a library that can run on Java ME (Foundation Profile 1.1, CDC) and allows me to basically do something along the lines of 

FILE OF type;

in Pascal.

Background: I need to have a largish (approx. 100MB) set of around 500.000 records for lookups by a known index value quickly. Do I really have to write this myself? Databases like Derby are way too big and bring lots of features (stored procedures, anyone?) I do not need.

Ideally I would just like to define a class with a few fields based on primitive types and Strings as a value holder object and persist these in a file I could – should the need arise – manually recover. That’s why I am not too much into serialization. From the past I have fought several occasions of corrupted binary data files which could not be recovered at all.

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  1. Editorial Team

    After looking around for quite some time, I have finally come to xBaseJ from SourceForge. It relies on java.nio, which is normally not included in the JavaME CDC profile, but we had a contractor port the relevant parts to the mobile J9 VM. Armed with this, we are now building our application on top of DBase III compatible files. Apart from being pretty reasonably fast, even on the mobile platform, this gives us access to a plethora of tools that can handle this format, without having to teach non-tech folks about a JDBC based DB admin tool they do not feel comfortable with.

    There has just been a recent release of a whole eBook, called “The Minimum You Need To Know About xBaseJ”, which is available for free from the project’s website, too.

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