search utility for JSP site

I am fairly new to JSP. I am in the process of converting a site from MS FrontPage to JSP. The old site had a nifty little search form where a user could type in key words and it would return a list of links to pages within the site containing those key words. It used IIS front page extensions to accomplish this.

I'm sure that this is a common thing to do. What is an easy way to accomplish this functionality in JSP? Can you point me to a sample? Or where I should direct my research?

Thanks,
Mark

The Lucene search engine is a full text search engine in Java. I don't know if it is particulary adapted to JSP.
Bill

Bill - Thanks a lot for the suggestion of Lucene. I have looked at it and found that it is not particulary adapted to JSP. It does not have web crawler and suggests that you write your own in the FAQ. I'm not looking to do that. There is a stalled sourceforge project called LARM that is looking to do this, but no one appears to be actively working on it.

There is another possible solution Java Search Engine. Does anyone have any experience with this one? If so, please post a comment about your experience.

Thanks In Advance,
Mark