To convert a string of date we can use the help from java.text.SimpleDateFormat that extends java.text.DateFormat abstract class.
import java.text.DateFormat;import java.text.SimpleDateFormat;import java.text.ParseException;import java.util.Date;
public Date StringToDate{ DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
try { Date today = df.parse("20/12/2005"); System.out.println("Today = " + df.format(today)); } catch (ParseException e) { System.out.println("Cannot convert to date "+e); } }Today = 20/12/2005The example starts by creating an instance of
SimpleDateFormat with "dd/MM/yyyy" format which mean that the date string is formatted in day-month-year sequence.Finally using the
parse(String source) method we can get the Date instance. Because parse method can throw java.text.ParseException exception if the supplied date is not in a valid format; we need to catch it.Here are the list of defined patterns that can be used to format the date taken from the Java class documentation.
| Letter | Date / Time Component | Examples |
| G | Era designator | AD |
| y | Year | 1996; 96 |
| M | Month in year | July; Jul; 07 |
| w | Week in year | 27 |
| W | Week in month | 2 |
| D | Day in year | 189 |
| d | Day in month | 10 |
| F | Day of week in month | 2 |
| E | Day in week | Tuesday; Tue |
| a | Am/pm marker | PM |
| H | Hour in day (0-23) | 0 |
| k | Hour in day (1-24) | 24 |
| K | Hour in am/pm (0-11) | 0 |
| h | Hour in am/pm (1-12) | 12 |
| m | Minute in hour | 30 |
| s | Second in minute | 55 |
| S | Millisecond | 978 |
| z | Time zone | Pacific Standard Time; PST; GMT-08:00 |
| Z | Time zone | -0800 |
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