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Criteria builder and Path..How to compare dates column

 
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Hi Sir,

I have a doubt in jpa query criteria builder with path or expression.

//I want to find who are all entered first post comment with in an hour after their  account created
       Path<Date> accountCreatedTime = root.<Date> get("AccountCreatedTime");
Path<Date> FirstPostCreatedTime = root.<Date> get("FirstPostCreatedTime");

       final Predicate timeInHourPredicate = criteriaBuilder
               .greaterThanOrEqualTo(accountCreatedTime, FirstPostCreatedTime);
Example,
1. Account Created at: 2018-SEP-10 at 10am and First Post entered 2018-SEP-10 at 10.15 am  this recond should be fetched. (FALLS IN AN HOUR)
2. Account Created at: 2018-SEP-10 at 10am and First Post entered 2018-SEP-10 at 3.50 pm  this SHOULD NOT  be fetched.

Is there any  way to add or separate hours from Path<Date> accountCreatedTime? or can we get difference between   Path<Date> accountCreatedTime  and Path<Date> FirstPostCreatedTime  in hours and in criteriaBuilder
 
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