Does Spring JPA throw an error if save function is unsuccessful?

Question

I would like to know if and what type of error is thrown by Spring JPA when trying to save an object to a database. The JpaRepository.java says to look at org.springframewor

Answer 1

CrudRepostiroy.save have return type the saved entity

 S save(S entity)
Saves a given entity. Use the returned instance for further operations as the save operation might have changed the entity instance completely.
Parameters:
entity -
Returns:
the saved entity