DateUtils类提供日期的处理方法?????????描述：???????????封装了对一些对日期常见的操作方法。?????????类I
DateUtils类提供日期的处理方法
?????????描述：???????????封装了对一些对日期常见的操作方法。
?????????类ID：??????????DateUtils
?????????方法：
方法名
描述
?
?
getToday( )
得到当前日期字符串
On Entry:
?
On Exit:
return?当前日期?按"yyyy-MM-dd"格式获取
format(Date)
将日期型转换为字符型.转换后的日期格式为yyyy-MM-dd
On Entry:
Date:?如:?Tue Jan 01 00:09:00 CST 2002??
?
On Exit:
return?String?返回字符型日期
getTime（）
获得当前时间.显示格式如：2008-07-18 10:21:41
On Entry:
?
On Exit:
return?String返回当前时间字符串
getTimeNoSeparate( )
获得当前时间.显示格式如：20080826102109一般用于作为新建文件夹或者文件名的一部分
On Entry:
?
On Exit:
return?String返回当前时间字符串
getNow（）
得到当前日期,格式如:20080825
On Entry:
?
On Exit:
return?String返回当前日期字符串
format（String）
将字符串转换成Date型如:2008-08-25 to Wed Aug 24 00:00:00 CST 2005
On Entry:
?
On Exit:
return Date返回Date型日期.
?
?????????代码：
?
public?class?DateUtils
{
????public?DateUtils()
????{
????}
????public?static?DateUtils?getInstance()
????{
????????return?dateUtils;
????}
????public?String?format(Date?date)
????{
????????String?format?=?"yyyy-MM-dd";
????????SimpleDateFormat?fmt?=?new?SimpleDateFormat(format);
????????return?fmt.format(date);
????}
????private?String?format(Date?date,?String?format)
????{
????????SimpleDateFormat?fmt?=?new?SimpleDateFormat(format);
????????return?fmt.format(date);
????}
????private?Date?parse(String?date,?String?format)
????????throws?ParseException
????{
????????SimpleDateFormat?fmt?=?new?SimpleDateFormat(format);
????????return?fmt.parse(date);
????}
????public?String?getToday()
????{
????????String?result?=?"";
????????Date?date?=?new?Date();
????????result?=?format(date);
????????return?result;
????}
????public?String?getTime()
????{
????????String?result?=?"";
????????Date?date?=?new?Date();
????????result?=?format(date,?"yyyy-MM-dd?HH:mm:ss");
????????return?result;
????}
????public?String?getTimeNoSeparate()
????{
????????String?result?=?"";
????????Date?date?=?new?Date();
????????result?=?format(date,?"yyyyMMddHHmmss");
????????return?result;
????}
????public?String?getNow()
????{
????????String?result?=?"";
????????Date?date?=?new?Date();
????????Calendar.getInstance(Locale.getDefault());
????????int?year?=?1;
????????Calendar.getInstance(Locale.getDefault());
????????int?month?=?2;
????????Calendar.getInstance(Locale.getDefault());
????????int?day?=?5;
????????Calendar.getInstance(Locale.getDefault());
????????int?week?=?7;
????????result?=?format(date,?"yyyyMMdd");
????????return?result;
????}
????public?Date?format(String?str)
????{
????????Date?result?=?null;
????????try
????????{
????????????str?=?str?+?"?";
????????????int?endStr?=?str.indexOf("?");
????????????String?dateString?=?str.substring(0,?endStr);
????????????result?=?parse(dateString,?"yyyy-MM-dd");
????????}
????????catch(Exception?ex)?{?}
????????return?result;
????}
????private?static?final?DateUtils?dateUtils?=?new?DateUtils();
}
