How can I add blank values instead of null values in cassandra ?

[buchi adddagada]

We are using DSE 5.1.0 & Spring boot Java.

While we are trying to insert data into cassandra , java by default inserts
null values in cassandra tables which is causing huge tombstones.


Instead of changing code in java to insert null values, can you control
anywhere at driver level ?


Thanks,

Buchi Babu