Java中的Calendar日历类

• 示例代码

import java.util.Calendar;//日历类

public class CalendarDemo {
    public static void main(String[] args) {
        Calendar calendar = Calendar.getInstance();//创建日历对象
        System.out.println(calendar);
        System.out.println(calendar.getTime());//日历对象转为日期对象
        //获取日历对象的信息 get方法
        System.out.println(calendar.get(Calendar.YEAR));
        System.out.println(calendar.get(Calendar.MONTH));
        System.out.println(calendar.get(Calendar.DATE));
        System.out.println(calendar.get(Calendar.HOUR_OF_DAY));
        System.out.println(calendar.get(Calendar.MINUTE));
        System.out.println(calendar.get(Calendar.SECOND));

        //设置日历对象中的值
        calendar.set(8888,8,8,8,8,8);
        System.out.println(calendar.get(Calendar.YEAR));
        System.out.println(calendar.get(Calendar.MONTH));
        System.out.println(calendar.get(Calendar.DATE));
        System.out.println(calendar.get(Calendar.HOUR_OF_DAY));
        System.out.println(calendar.get(Calendar.MINUTE));
        System.out.println(calendar.get(Calendar.SECOND));
    }
}

• 结果输出

java.util.GregorianCalendar[time=1607417793872,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Asia/Shanghai",offset=28800000,dstSavings=0,useDaylight=false,transitions=31,lastRule=null],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2020,MONTH=11,WEEK_OF_YEAR=50,WEEK_OF_MONTH=2,DAY_OF_MONTH=8,DAY_OF_YEAR=343,DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=2,AM_PM=1,HOUR=4,HOUR_OF_DAY=16,MINUTE=56,SECOND=33,MILLISECOND=872,ZONE_OFFSET=28800000,DST_OFFSET=0]
Tue Dec 08 16:56:33 CST 2020
2020
11
8
16
56
33
8888
8
8
8
8
8