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Dates

Every day has a date. It can be formatted in seveal different ways.

Here are the ways Java can format dates:

Found at: Java DOCS
Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996; 96
Y Week year Year 2009; 09
M Month in year Month July; Jul; 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day name in week Text Tuesday; Tue
u Day number of week (1 = Monday, ..., 7 = Sunday) Number 1
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time; PST; GMT-08:00
Z Time zone RFC 822 time zone -0800
X Time zone ISO 8601 time zone -08; -0800; -08:00

To use the date format, we can do the following:

  import java.util.Date;
  import java.text.SimpleDateFormat;

  public class TestDate {

    public static void main(String[] args) {
      Date d = new Date();
      SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
      String output = sdf.format(d);
      System.out.println(output);
    }
  }

This will output todays date in the MM/dd/yyyy format.

By putting any of the above characters in the SimpleDateFormat constructor, you can output the date in any of the allowed formats.


Kyle Eggleston
kyle@dreamsense.com
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