Mysql connection via cmd prompt (no replies)

Hello all
I am able to connect to mysql db via java program but when I run it using cmd, it does not work.

java -jar iris.jar program-file=Vbra.txt naive unsafe-rules

Exception: com.mysql.jdbc.Driver

java.sql.SQLException: Data Source Unavailable, try connect() first...


Is there Any body who knows how to use Connect() via cmd prompt or any other way to connect ?

Thanking you in advance