Which html DOM parser library for Java is best?

I am working on crawler, which will search for goods in e-shops. It's my dissertation, so nothing commercial..

I use Java SE.

I will need some kind of advanced library, to make some tests for diagnostics (if that web page is what I am looking for), and开发者_运维百科 for extracting relevant data from right ones.

Do you have personal experience with parser libraries to recommend me best one?

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JSoup is fantastic. Highly recommended.