java中得到当前时间

1:

java.sql.Timestamp a = new java.sql.Timestamp(System.currentTimeMillis());

2:

java.util.Date a = new java.util.Date();

theDate=new java.util.Date();//得到当前的日期和时间,如 2003-06-03 08:00:00

3:

java.util.Date a;

a.setTime(System.currentTimeMillis());

4:

currTime=new java.sql.Time(new java.util.Date().getTime());//得到当前时间。

如 08:00:00

currDate=new java.sql.Date(new java.util.Date().getTime());//得到当前日期。

如 2003-06-03

5:

Date date = Calendar.getInstance().getTime();

SimpleDateFormat sdf = new SimpleDateFormat( "yyyy/MM/dd HH:MM:SS ");

String sDate = sdf.format(date);

6:

Calendar todaysDate = new GregorianCalendar();

year = todaysDate.get(Calendar.YEAR);

month = todaysDate.get(Calendar.MONTH) + 1;

day = todaysDate.get(Calendar.DAY_OF_MONTH);

hourOfDay = todaysDate.get(Calendar.HOUR_OF_DAY); // 24小时制

hour = todaysDate.get(Calendar.HOUR); // 12小时制

minute = todaysDate.get(Calendar.MINUTE);

second = todaysDate.get(Calendar.SECOND);

7:

Date(int year, int month, int date)

... 使用api, 查看Date constructor.

Deprecated. As of JDK version 1.1, replaced by

Calendar.set(year + 1900, month, date)

or

GregorianCalendar(year + 1900, month, date)

.

DateFormat format1 = new SimpleDateFormat("yyyy-MM-dd");
DateFormat format 2= new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");
Date date = null;
String str = null;

// String转Date
str = "2007-1-18";
try {
date = format1.parse(str);
data = format2.parse(str);
} catch (ParseException e) {
e.printStackTrace();
}

//Date转String
date=new Date();
str=format1.format(date);
str=format2.format(date);

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