Question

Which data type in Java can hold just the date and doesn’t require a time component? For example, just to store 12/07/2012. I’m working with persisting the data to/from a database that has a date-only data type, so I’m looking for the best equivalent data type in Java.

Answer 1

from the JDK: java.sql.Date:

A thin wrapper around a millisecond value that allows JDBC to identify
this as an SQL DATE value. A milliseconds value represents the number
of milliseconds that have passed since January 1, 1970 00:00:00.000 GMT.

To conform with the definition of SQL DATE, the millisecond values
wrapped by a java.sql.Date instance must be ‘normalized’ by setting
the hours, minutes, seconds, and milliseconds to zero in the
particular time zone with which the instance is associated.

or from JodaTime: DateMidnight or LocalDate (thanks
@cdeszaq)

DateMidnight defines a date where the time component is fixed at
midnight. The class uses a time zone, thus midnight is local unless a
UTC time zone is used.

It is important to emphasise that this class represents the time of
midnight on any given day. Note that midnight is defined as 00:00,
which is at the very start of a day.