Java PDF Tools - Alternatives to iText?

I just wrote and released a larger tutorial on using iText to generate PDF in Java. Having finished the tutorial I discovered that iText is no longer free to use for commercial use. It's not that I don't want to pay for software. In fact, I believe we should always at least pay a little, even for free stuff (make a micro donation).

It's just that iText now has a "write me to get a license". When a company does that, it smells to me like "Tell me how much money you have, and I'll tell you the price of my product". I usually avoid these types of vendors.

So, is there an alternative to iText for generating PDF with Java?