Apache Lucene

Apache Lucene 
 
http://lucene.apache.org/
http://lucene.apache.org/java/docs/index.html
http://lucene.apache.org/java/docs/api/index.html 


http://www.lucenetutorial.com/your-first-project.html

http://www.lucenetutorial.com/techniques/indexing-databases.html  

한글 관련

https://github.com/need4spd/walkingword/tree/master/src/com/tistory/devyongsik/sample 

http://setong.tistory.com/43