public void TimeTest()
{
String lastdate="";
/*
Symbol Meaning Presentation Example
------ ------- ------------ -------
G era designator (Text) AD
y year (Number) 1996
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 of week in month (Number) 2 (2nd Wed in July)
w week in year (Number) 27
W week in month (Number) 2
a am/pm er (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)
'' single quote (Literal) '
Examples Using the US Locale: Format Pattern Result
-------------- -------
"yyyy.MM.dd G 'at' hh:mm:ss z" ->> 1996.07.10 AD at 15:08:56 PDT
"EEE, MMM d, ''yy" ->> Wed, July 10, '96
"h:mm a" ->> 12:08 PM
"hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time
"K:mm a, z" ->> 0:00 PM, PST
"yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 1996.July.10 AD 12:08 PMCode Sample: SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST");
pdt.setStartRule(DateFields.APRIL, 1, DateFields.SUNDAY, 2*60*60*1000);
pdt.setEndRule(DateFields.OCTOBER, -1, DateFields.SUNDAY, 2*60*60*1000);
// Format the current time.
SimpleDateFormat formatter
= new SimpleDateFormat ("yyyy.mm.dd e 'at' hh:mm:ss a zzz");
Date currentTime_1 = new Date();
String dateString = formatter.format(currentTime_1);
// Parse the previous string back into a Date.
ParsePosition pos = new ParsePosition(0);
Date currentTime_2 = formatter.parse(dateString, pos);
*/
//mmm代表月份--大写M代表用汉字表示,小写代表用数字表示,3个m代表月份用3位数来表示.
SimpleDateFormat formatter = new SimpleDateFormat("EEE mm dd hh:mm:ss yyyy", Locale.getDefault());
Date currentDate = new Date();
lastdate = formatter.format(currentDate);
System.out.println("SimpleDateFormat:"+lastdate);
SimpleDateFormat m_oFormatTimeOnly=new SimpleDateFormat("hh:mm:ss", Locale.getDefault());
String m_strOnlyTime = m_oFormatTimeOnly.format(currentDate);
System.out.println("OnlyTime:"+m_strOnlyTime); SimpleDateFormat m_oFormatOnlyYear=new SimpleDateFormat("yyyy", Locale.getDefault());
String m_strOnlyYear = m_oFormatOnlyYear.format(currentDate);
System.out.println("OnlyYear:"+m_strOnlyYear); SimpleDateFormat m_oFormatYMD=new SimpleDateFormat("yyyy.MM.dd", Locale.getDefault());
String m_strOnlyYMD = m_oFormatYMD.format(currentDate);
System.out.println("OnlyYear:"+m_strOnlyYMD);
}
{
String lastdate="";
/*
Symbol Meaning Presentation Example
------ ------- ------------ -------
G era designator (Text) AD
y year (Number) 1996
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 of week in month (Number) 2 (2nd Wed in July)
w week in year (Number) 27
W week in month (Number) 2
a am/pm er (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)
'' single quote (Literal) '
Examples Using the US Locale: Format Pattern Result
-------------- -------
"yyyy.MM.dd G 'at' hh:mm:ss z" ->> 1996.07.10 AD at 15:08:56 PDT
"EEE, MMM d, ''yy" ->> Wed, July 10, '96
"h:mm a" ->> 12:08 PM
"hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time
"K:mm a, z" ->> 0:00 PM, PST
"yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 1996.July.10 AD 12:08 PMCode Sample: SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST");
pdt.setStartRule(DateFields.APRIL, 1, DateFields.SUNDAY, 2*60*60*1000);
pdt.setEndRule(DateFields.OCTOBER, -1, DateFields.SUNDAY, 2*60*60*1000);
// Format the current time.
SimpleDateFormat formatter
= new SimpleDateFormat ("yyyy.mm.dd e 'at' hh:mm:ss a zzz");
Date currentTime_1 = new Date();
String dateString = formatter.format(currentTime_1);
// Parse the previous string back into a Date.
ParsePosition pos = new ParsePosition(0);
Date currentTime_2 = formatter.parse(dateString, pos);
*/
//mmm代表月份--大写M代表用汉字表示,小写代表用数字表示,3个m代表月份用3位数来表示.
SimpleDateFormat formatter = new SimpleDateFormat("EEE mm dd hh:mm:ss yyyy", Locale.getDefault());
Date currentDate = new Date();
lastdate = formatter.format(currentDate);
System.out.println("SimpleDateFormat:"+lastdate);
SimpleDateFormat m_oFormatTimeOnly=new SimpleDateFormat("hh:mm:ss", Locale.getDefault());
String m_strOnlyTime = m_oFormatTimeOnly.format(currentDate);
System.out.println("OnlyTime:"+m_strOnlyTime); SimpleDateFormat m_oFormatOnlyYear=new SimpleDateFormat("yyyy", Locale.getDefault());
String m_strOnlyYear = m_oFormatOnlyYear.format(currentDate);
System.out.println("OnlyYear:"+m_strOnlyYear); SimpleDateFormat m_oFormatYMD=new SimpleDateFormat("yyyy.MM.dd", Locale.getDefault());
String m_strOnlyYMD = m_oFormatYMD.format(currentDate);
System.out.println("OnlyYear:"+m_strOnlyYMD);
}
java.text.SimpleDateFormat df1=new java.text.SimpleDateFormat("HH:mm:ss");
java.util.Date d=new java.util.Date();
System.out.println("当前日期:"+df.format(d));
System.out.println("当前时间:"+df1.format(d));