Hi Spring,
The URL format is
jdbc:sap://hostnameorip:portnumber
Portnumber is 3<instancenumber>15 -> for a instance 01 should be 30115.
The class is com.sap.db.jdbc.Driver found on ngdbc.jar library (This don't come with Studio, get it on SAP HANA Client)
Regards, Fernando Da Rós