java 精确获取时分秒

 1 import java.util.Calendar;
 2 import java.util.GregorianCalendar;
 3 public class systemdemo {
 4     public static void main(String[] args) {
 5         Calendar calendar=null;
 6         calendar =new GregorianCalendar();//子类实例化
 7         System.out.println("年： "+calendar.get(Calendar.YEAR));
 8         System.out.println("月 "+(calendar.get(Calendar.MONTH)+1));
 9         System.out.println("日： "+calendar.get(Calendar.DAY_OF_MONTH));
10         System.out.println("时： "+calendar.get(Calendar.HOUR_OF_DAY));
11         System.out.println("分： "+calendar.get(Calendar.MINUTE));
12         System.out.println("秒： "+calendar.get(Calendar.SECOND));
13         System.out.println("毫秒 "+calendar.get(Calendar.MILLISECOND));
14         
15     }
16 }