<PRE class=java name="code">package cn.com;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * @author ty 1??DateFormat?????????????????????????????????????Localc????????????????????Ч??
 *         2??SimpleDateFormat???DateFormat????????????????simpleDateFormate???????
 */
public class DateDemo {

 public static void main(String[] args) {

  // dateDemo();
  // dateDemo2();
  // dateFormat();
  simpleDateFormat();

 }

 /* date??? */
 private static void dateDemo() {
  Date date = new Date();
  System.out.println("????????" + date);
 }

 /*
  * calendar???????????????????????????????????calendar??????????????????????0-11?￡????????1??
  * ????????????????????????
  */
 private static void dateDemo2() {
  GregorianCalendar calendar = new GregorianCalendar();
  System.out.println(calendar.get(Calendar.MONTH));

 }

 /*
  * DateFormat???????????????????????????????????????????????????dateformat????getdateInstance;
  * ??????????????getdateTimeinstance
  */
 private static void dateFormat() {
  DateFormat df1 = DateFormat.getDateInstance();
  DateFormat df2 = DateFormat.getDateTimeInstance();
  System.out.println("DATE:" + df1.format(new Date()));
  System.out.println("DATETIME:" + df2.format(new Date()));
 }

 /*
  * simpleDateFormat??yyyy?????MM????￡?dd??????HH??????mm??????ss?????SSS???????
  * ???????????????????????
  */
 private static void simpleDateFormat() {
  String strDate = "2008-10-19 10:11:30.345";
  String pat1 = "yyyy-MM-dd HH:mm:ss.SSSS";
  String pat2 = "yyyy??MM??dd?? HH?mm??ss??SSSS????";
  SimpleDateFormat sdf1 = new SimpleDateFormat(pat1);
  SimpleDateFormat sdf2 = new SimpleDateFormat(pat2);
  Date d = null;
  try {
   d = sdf1.parse(strDate);// ??????????????е????????????
  } catch (ParseException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  System.out.println(sdf2.format(d));// ?????????μ???
 }
}
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