【Java常用类库】_日期操作类(Date、Calendar)笔记
本章目标:
掌握Date类的使用import java.util.Date; public class DateDemo01{ public static void main(String args[]){ Date date = new Date(); //直接输出实例化对象 System.out.println("当前时间为:"+date); } }
import java.util.*; public class DateDemo02{ public static void main(String args[]){ Calendar calendar = new Gregoriancalendar(); //实例化Calendar类对象 System.out.println("YEAR:"+calendar.get(Calendar.YEAR)); System.out.println("MONTH"+calendar.get(Calendar.MONTH)); System.out.println("DAY_OF_MONTH:"+calendar.get(Calendar.DAY_OF_MONTH:)); System.out.println("HOUR_OF_DAY:"+calendar.get(Calendar.HOUR_OF_DAY)); System.out.println("MINUTE:"+calendar.get(Calendar.MINUTE)); System.out.println("SECOND:"+calendar.get(Calendar.SECOND)); System.out.println("MILLSECOND:"+calendar.get(Calendar.MILLSECOND)); } }