I build a CF based on Date Time so I think there is a interrest to define the CF with compareBy TimeUUID. But I can't understand how to use this in java
I've a Calendar object representing a date time.
I want to use it as column name but as you know you can only put ther byte[] so how to pass from a Calendar to byte[].

which representation I need to use ??

Thanks to help
If you know somewhere there is a sample or anything please