Everyone will encounter some difficulties that are not difficult to use when using the Date object output date string. It is because he is not difficult because everyone is not doing, but it is only a common cumbersome conversion to make people worry, and most people are not taking into account. Some people may have aware of this, but may not be full, so I will write it here, I will give you a reference, I've been here to take a brick, I hope to have more people to discuss this topic. . There is a very useful class in Java: SimpleDateFormat, which uses template methods to format output date objects in text form. The general usage is as follows: SimpleDateFormat f = New SimpleDateFormat ("MMM DD, YYYY"); f.Format (new date ());
The string that constructs SimpleDateFormat is a mold. This mode is called
Model for "February 21th, 2004". Other modes definitions are: symbolic meaning display form
Example G AD text
ADY years
2001m month text or number
July or 07d day number
10h a.m./p.m. Matter hour (1 ~ 12) number
12h 24 hours clock (0 ~ 23) number
0M minute number
30S second number
43S miqi number
234E a few text
TuesdayD's first few days in the year
360F a few years in the month
The first few weeks in the year of 2W
The first few weeks of a month in 40W
1A a.m./p.m. Tag text
PMK 24 hour clock (1 ~ 24) number
24K a.m./p.m. Waves (0 ~ 11) numbers
0z Time Zone Text
EASTERN 'Essential Separator
'Single quaum symbol
'
These symbols can be combined, in which the display form is a symbol of "text", the long text string will be output using 4 or more repetitive combinations, and the short string is output.
Such as: E produces MON, while Eeee generates Monday. For symbols of the display form "text and numbers", the following two times include multiplexing generation numbers, and the text is generated twice.
