I have downloaded Lucene 3.0.0 and
when I used the command
java -jar lucene-core-3.0.0.jar
in the directory where Lucene is present
I got this message
Failed to load Main-Class manifest attribute from lucene-core-3.0.0.jar
How do I proceed?
Skaffman is correct. Here's a minimal Lucene application. If you want a self-contained search server, try Solr.