The date () Conversion of Java

This field is transferred from CSDN 1989

This article is a summary of the study of the article on the network, thank you for your selfless sharing.

The System.out.printf () method can handle the output of a date.

Corresponding List

Conversion character	Type	Example
C	The full date and time	Mon Feb 18:05:11 PST 2004
F	ISO 8061 Date	2004-02-09
D	Date in US format	02/09/2004
T	24 Hour time	18:03:23
R	12 Hour time	05:03:23 pm
R	24 hours, no seconds.	18:05
Y	4-digit year (front complement 0)	2004
Y	The following two digits of the year (front 0)	04
C	First two digits of the year (front 0)	20
B	Full spelling of the month	February
B or H	Abbreviation of the Month	Feb
M	Two-digit month (preceded by 0)	02
D	Two-digit day (front 0)	09
E	Two-digit month (not 0 in front)	9
A	Full spelling of the day of the week	Monday
A	Abbreviation of the day of the week	Mon
J	Three-digit years in the year (front 0), between 001 and 366	16X
H	Two-digit hour (front 0), between 0 and 23	18
K	Two-digit hour (front not 0) between 0 and 23	8
I (Uppercase i)	Two-digit hour (front 0), between 0 and 12	06
L (lowercase L)	Two-digit hour (front not 0), between 0 and 12	6
M	Two-digit minute (front 0)	05
S	Two-digit seconds (front-fill 0)	19
L	Three-digit millisecond (preceded by 0)	047
N	Nine-digit nanosecond (preceded by 0)	047000000
P	Morning or afternoon capital sign	Pm
P	Morning or afternoon lowercase flag	Pm
Z	From GMT, RFC822 digital Shift	-0800
Z	Time	Pst
S	Number of seconds from GMT 1970-01-01 00:00:00	107884319
Q	Number of milliseconds since GMT 1970-01-01 00:00:01	107884319047

Test code

 PackageSE;Importjava.util.Date;/*** * <p> * Description: This example is to learn printf formatted output for date type * </p> * *@authorZhangjunshuai *@version1.0 Create date:2014-10-16 pm 6:12:50 Project name:java7thread * * <pre> * * Modification History: * Date Author Version Description *---------- -------------------------------------------------------------------------------------------------* Lastchange: $ Date:: $ $Author: $ $Rev: $ * </pre> **/ Public classPrintfdate {/*** <p> * </p> * *@authorZhangjunshuai * @date 2014-10-16 pm 6:12:46 *@paramargs*/     Public Static voidMain (string[] args) {//The printf method can print the time format, starting with T, in two-letter format where people end with letters in a tableSystem.out.printf ("%tc\n",NewDate ()); System.out.printf ("%tf\n",NewDate ()); System.out.printf ("%td\n",NewDate ()); System.out.printf ("%tt\n",NewDate ()); System.out.printf ("%tr\n",NewDate ()); System.out.printf ("%tr\n",NewDate ()); System.out.printf ("%ty\n",NewDate ()); System.out.printf ("%ty\n",NewDate ()); System.out.printf ("%tc\n",NewDate ()); System.out.printf ("%tb\n",NewDate ()); System.out.printf ("%tm\n",NewDate ()); System.out.printf ("%td\n",NewDate ()); System.out.printf ("%te\n",NewDate ()); System.out.printf ("%ta\n",NewDate ()); System.out.printf ("%ta\n",NewDate ()); System.out.printf ("%tj\n",NewDate ()); System.out.printf ("%th\n",NewDate ()); System.out.printf ("%tk\n",NewDate ()); System.out.printf ("%ti\n",NewDate ()); System.out.printf ("%tl\n",NewDate ()); System.out.printf ("%tm\n",NewDate ()); System.out.printf ("%ts\n",NewDate ()); System.out.printf ("%tl\n",NewDate ()); System.out.printf ("%tn\n",NewDate ()); System.out.printf ("%tp\n",NewDate ()); //System.out.printf ("%tp\n", New Date ());//This method error should be related to time zoneSystem.out.printf ("%tz\n",NewDate ()); System.out.printf ("%tz\n",NewDate ()); System.out.printf ("%ts\n",NewDate ()); System.out.printf ("%tq\n",NewDate ()); }}

Results:

As you can see from the table above, some things only give partial information for a specified date, and it is too clumsy to have to do a part of the operation on a date operation multiple times, so that you can use a formatted parameter index for formatting the string. The index must be immediately after the%, ending with $. The index starts at 1, not 0.

1. System.out.printf ("%1 $ s%2$TB%2$te,%2$ty\n", "Due Date:", new Date ()); % after 2 represents the second parameter, here is the new Date ()

You can also choose to use the < flag, which indicates that the parameters in the preceding format description will be used again.

1. System.out.printf ("%s%tb%<te,%<ty", "Due Date:", new Date ());   Select Use < Flag, which indicates that the parameters in the preceding format description will be used again.

The date () Conversion of Java