[java] Java Simple Date Format 速查表(for SimpleDateFormat)

Letter	Date or Time Component	Presentation	Examples
G	Era designator	Text	AD
yyyy,yy	*Year	Year	1996; 96
MMMM;MMM;MM;M	*Month in year	Month	July; Jul; 07;7
w	Week in year	Number	27
W	Week in month	Number	2
D	Day in year	Number	189
dd;d	*Day in month	Number	05;5
F	Day of week in month	Number	2
EEEE;EEE;E	Day in week	Text	Tuesday; Tue; 2
a	Am/pm marker	Text	PM
HH;H	*Hour in day (0-23)	Number	02;2
kk;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
mm;m	*Minute in hour	Number	08;8
ss;s	*Second in minute	Number	05;5
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

Ex : 2001-07-04 12:08:56

Date and Time Pattern	Result
"yyyy.MM.dd G 'at' HH:mm:ss z"	2001.07.04 AD at 12:08:56 PDT
"EEE, MMM d, ''yy"	Wed, Jul 4, '01
"h:mm a"	12:08 PM
"hh 'o''clock' a, zzzz"	12 o'clock PM, Pacific Daylight Time
"K:mm a, z"	0:08 PM, PDT
"yyyyy.MMMMM.dd GGG hh:mm aaa"	02001.July.04 AD 12:08 PM
"EEE, d MMM yyyy HH:mm:ss Z"	Wed, 4 Jul 2001 12:08:56 -0700
"yyMMddHHmmssZ"	010704120856-0700

http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html