Java SE Learning the printf date conversion character

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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	069
H	Two-digit hour (preceded by 0). from 0 to 23	18
K	Two-digit hour (front not 0) between 0 and 23	8
I (Uppercase i)	Two-digit hour (preceded by 0). from 0 to 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)	14V
N	Nine-digit nanosecond (preceded by 0)	047000000
P	Morning or afternoon capital sign	Pm
P	Morning or afternoon lowercase flag	Pm
Z	Starting 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

Package Se;import java.util.date;/** * * <p> * Description: This example is to learn printf formatted output for date type * </p> * @author ZHANGJ Unshuai * @version 1.0 * Create date:2014-10-16 PM 6:12:50 * Project name:java7thread * * <pre> * Modification Hist Ory: * Date Author Version Description *--------  ---------------------------------------------------------------------------------------------------* Lastchange: $Date:: $ $Author: $ $Rev: $ * </pre> * */public class Printfdate {/** * &LT;P&G T * </p> * @author Zhangjunshuai * @date 2014-10-16 pm 6:12:46 * @param args */public static void main (string[] args) { The printf method can print the time format. Starting with T, the two-letter format System.out.printf ("%tc\n", New Date ()) in which the person ends with a letter in the table; System.out.printf ("%tf\n", New Date ()); System.out.printf ("%td\n", New Date ()); System.out.printf ("%tt\n", New Date ()); System.out.printf ("%tr\n", New Date ()); System.out.printf ("%tr\n", New Date ()); System.out.printf ("%ty\n", New Date ()); System.out.printf ("%ty\n", New Date ()); System.out.printf ("%tc\n", New Date ()); System.out.printf ("%tb\n", New Date ()); System.out.printf ("%tm\n", New Date ()); System.out.printf ("%td\n", New Date ()); System.out.printf ("%te\n", New Date ()); System.out.printf ("%ta\n", New Date ()); System.out.printf ("%ta\n", New Date ()); System.out.printf ("%tj\n", New Date ()); System.out.printf ("%th\n", New Date ()); System.out.printf ("%tk\n", New Date ()); System.out.printf ("%ti\n", New Date ()); System.out.printf ("%tl\n", New Date ()); System.out.printf ("%tm\n", New Date ()); System.out.printf ("%ts\n", New Date ()); System.out.printf ("%tl\n", New Date ()); System.out.printf ("%tn\n", New Date ()); System.out.printf ("%tp\n", new Date ()),//system.out.printf ("%tp\n", new Date ());//This method error should be related to time zone System.out.printf (" %tz\n ", New Date ()); System.out.printf ("%tz\n", New Date ()); System.out.printf ("%ts\n", New Date ()); System.out.printf ("%tq\n", New Date ());}}

Results:

Can be seen from the above table. Some things just give some information about a given date. It is too clumsy to assume that a part of the operation of a date operation can be accomplished several times. This enables the use of a formatted parameter index at the point where a formatted string is used.

The index must be immediately after the%, ending with $. index starts from 1 , rather than 0.

System.out.printf ("%1 $ s%2$TB%2$te,%2$ty\n", "Due Date:", new Date ()), and 2 after//% represents the second number of parameters. This refers to the new Date ()

can also choose to use the < logo. It indicates that the parameters in the preceding format description will be used again.

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

Java se learning printf date conversion