tl;dr
LocalDate.parse( "2013-09-18" )
… and …
myLocalDate.toString() // Example: 2013-09-18
java.time
The Question and other Answers are out-of-date. The troublesome old legacy date-time classes are now supplanted by the java.time classes.
ISO 8601
Your input string happens to comply with standard ISO 8601 format, YYYY-MM-DD. The java.time classes use ISO 8601 formats by default when parsing and generating string representations of date-time values. So no need to specify a formatting pattern.
LocalDate
The LocalDate
class represents a date-only value without time-of-day and without time zone.
LocalDate ld = LocalDate.parse( "2013-09-18" );
About java.time
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date
, Calendar
, & SimpleDateFormat
.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.*
classes.
Where to obtain the java.time classes?
The ThreeTen-Extra project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as Interval
, YearWeek
, YearQuarter
, and more.