Java uses SimpleDateFormat to format date time. Rp

First look at all the representations of the formatted log.

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1. Time Date Identifier:
2. YYYY: Year
3. MM: Month
4. DD: Day
5. HH:1~12-hour System (1-12)

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1. HH:24-hour System (0-23)
2. MM: Min
3. SS: Seconds
4. S: MS
5. E: Day of the week
6. D: The day ordinal of a year
7. F: The first few weeks of January (the total number of days in this month divided by 7)
8. W: The first few weeks of the year
9. W: The week of January (will be calculated according to the actual situation)
10. A: Last afternoon logo
11. K: Similar to HH, indicating a 24-hour day (1-24).
12. K: And Hh<span > Almost </span><span, which represents a 12-hour day (0-11). </span>
13. Z: Indicates time zone

Be aware of the size of the case, or it will be formatted after the date will be very messy Oh!!!

At the same time not a letter can be written more than, such as: yyyyyyyyyyy. According to your number size, according to the length of the letter written, in front of the 0.

For example: you want to put 2013-08-13 15:29:44 this time format to August 13, 2013 15:29 44 seconds

Accidentally mistake the case in the time identifier in the formatted date.

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1. SimpleDateFormat SDF = new SimpleDateFormat ("yyyy mm month dd Day hh mm min ss sec");
2. It's written like this. The final result is wrong.

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1. 2013 August 14th 15 o'clock 08 minutes 59 seconds

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1. This mm is written here is the month of the expression. And the minute is the expression of mm. So pay attention to,

The following is the most complete example of a date format word.

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1. SimpleDateFormat SDF = new SimpleDateFormat ("Yyyyyyyy-mm-dd hh (hh): Mm:ss S E D F w w a k K z");
2. Long times = System.currenttimemillis ();
3. System.out.println (times);
4. Date date = new Date (times);
5. String Tim = Sdf.format (date);
6. System.out.println (Tim);

Results of the output:

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1. 00002013-08-14 15 (03): 56:40 742 weeks 3,226 2 33 3 pm 3 CST

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2. SimpleDateFormat SDF = new SimpleDateFormat ("Now is the yyyy mm month DD Day hh (HH) mm Sub SS s millisecond Week E this year D Day this month the first F week this year the first W star  Period of the month of the first W week of today's a k1~24 system time k0-11 hours time Z time zone ");
4. Long times = System.currenttimemillis ();
6. System.out.println (times);
8. Date date = new Date (times);
10. String Tim = Sdf.format (date);
12. System.out.println (Tim);

Output Result:

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1. Now is August 14, 2013 16 (04) when 03 minutes 03 seconds 812 milliseconds Week Wednesday this year the No. 226 day this month 2nd week this year 33rd week this month 3rd week today's afternoon 161~24 system time 40-11 hour time CST Area

Identifier table:

Symbol	meaning	Presentation	Example
G	ERA designator	Text	AD
Y	Year	Number	2009
M	Month in year	Text & Number	July & 07
D	Day in month	Number	10
H	Hour in am/pm (1-12)	Number	12
H	Hour in Day (0-23)	Number	0
M	Minute in hour	Number	30
S	Second in minute	Number	55
S	Millisecond	Number	978
E	Day in Week	Text	Tuesday
D	Day in year	Number	189
F	Day's week in month	Number	2 (2nd Wed in July)
W	Week in year	Number	27
W	Week in month	Number	2
A	AM/PM Marker	Text	Pm
K	Hour in Day (1-24)	Number	24
K	Hour in am/pm (0-11)	Number	0
Z	Time zone	Text	Pacific Standard Time
‘	Escape for text	Delimiter	(none)
‘	Single quote	Literal	‘

Text turn: http://blog.csdn.net/yangbobo1992/article/details/9965105

Java uses SimpleDateFormat to format date time. Rp