What's the most convenient way to access Amazon's SimpleDB from Java?

I found at least two libraries. The first one is "typica" (http://code.google.com/p/typi开发者_运维百科ca/), the second is the SDK that's provided by Amazon (http://aws.amazon.com/sdkforjava/).

In the newest typica release are two quite identical packages, com.xerox.amazonws.sdb and com.xerox.amazonws.simpledb. They share a similar naming of classes. How do they differ?

My requirements are rather simple. Nothing fancy. I don't need a JPA mapping or so. Just to get simple data into a domain and out of it with a few lines of code.

Are there more Java APIs for Amazon SimpleDB? Which one should I use?

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Just for completeness, I ended up using the SDK provided by Amazon for Java. It can be found here:

http://aws.amazon.com/sdkforjava/

All other client libraries were outdated or had missing functionality.