SimpleDateFormat中经常用到的日期时间掩码:
The following pattern letters are defined (all other characters from 'A'
to 'Z'
and from 'a'
to 'z'
are reserved):
Letter Date or Time Component Presentation Examples G
Era designator Text AD
y
Year Year 1996
;96
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 in week Text Tuesday
;Tue
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