Java日期格式化及其使用例子收集
1 SimpleDateFormat担当重任,怎样格式化都行import java.util.Date;import java.text.SimpleDateFormat;import java.util.Date;import java.text.SimpleDateFormat;import java.util.GregorianCalendar;import java.text.*;import java.util.Date;import java.text.SimpleDateFormat;import java.util.GregorianCalendar;import java.text.*;这3例源自http://blog.csdn.net/zhoujian2003/archive/2005/04/22/358363.aspx4 获取系统时期和时间，转换成SQL格式后更新到数据库 (http://blog.csdn.net/netrope/archive/2005/11/19/532729.aspx)java.util.Date d=String dateStr = s.format(d); Date myDate = DecimalFormat df = 输出结果为：33,665,448,856.66 其他：获取毫秒时间 System.currentTimeMillis(); 7 在数据库里的日期只以年-月-日的方式输出 (http://blog.csdn.net/zzsxvzzsxv/archive/2007/08/27/1761004.aspx)定义日期格式：SimpleDateFormat sdf = new SimpleDateFormat(yy-MM-dd);sql语句为：String sqlStr = "select bookDate from roomBook where bookDate between '2007-4-10' and '2007-4-25'";输出： System.out.println(df.format(rs.getDate("bookDate"))); 8 经典例子(http://blog.csdn.net/donkeyzheng/archive/2005/12/30/566470.aspx)Date date = from.getAfmdate();if (null != date) { SimpleDateFormat yearFormat = new SimpleDateFormat("yyyy"); SimpleDateFormat monthFormat = new SimpleDateFormat("MM"); SimpleDateFormat dayFormat = new SimpleDateFormat("dd"); to.setAfmYear(yearFormat.format(date)); to.setAfmMonth(monthFormat.format(date)); to.setAfmDay(dayFormat.format(date)); } SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); appPo.setAfmdate(format.parse(appForm.getAfmYear() + "-" + appForm.getAfmMonth() + "-" + appForm.getAfmDay()));