lucene-core-3.3.0 not optimizing

[KARTHIK SHIVAKUMAR]

Hi

Spec
O/s win os 7
Jdk : 1.6.0_29
Lucene  lucene-core-3.3.0



Finally after Indexing successfully ,Why this Code does not optimize (
sample code )

            INDEX_WRITER.optimize(100);
            INDEX_WRITER.commit();
            INDEX_WRITER.close();


*N.S.KARTHIK
R.M.S.COLONY
BEHIND BANK OF INDIA
R.M.V 2ND STAGE
BANGALORE
560094*