Using date and time fields in entity objects

Temporal annotation shows which part of the datetime to be stored to database:
    @Temporal(TemporalType.TIMESTAMP) // date & time
    @Temporal(TemporalType.DATE) // only date part
    @Temporal(TemporalType.TIMESTAMP) // only time part

Nice tutorial: http://shengwangi.blogspot.bg/2014/12/the-value-of-annotation-temporal-for-date-column.html