日历类Calendar

Posted 2020-12-25 java-jiangtao-home

import java.util.Calendar;

public class Calendarfinally {
    public static void main(String[] args) {
        Calendar ca = Calendar.getInstance();
        //System.out.println(ca);
//        获得年
        int year = ca.get(Calendar.YEAR);
//        获得月
        int month = ca.get(Calendar.MONTH);
//        获得日
        int day = ca.get(Calendar.DAY_OF_MONTH);
//        获得小时
        int hour = ca.get(Calendar.HOUR_OF_DAY);
//        获得分钟
        int minute = ca.get(Calendar.MINUTE);
//        获得秒
        int second = ca.get(Calendar.SECOND);
//        获得毫秒
        int ms = ca.get(Calendar.MILLISECOND);
        
        
        /**
         * 设置日历
         */
        
        ca.set(Calendar.YEAR, 1999);
        ca.set(Calendar.MONTH, 1999);
        ca.set(Calendar.DAY_OF_MONTH, 1999);
        ca.set(Calendar.HOUR_OF_DAY, 1999);
        ca.set(Calendar.MINUTE, 1999);
        ca.set(Calendar.SECOND, 1999);
        ca.set(Calendar.MILLISECOND, 1999);
        //获得日历相关的毫秒数
        long ms2 = ca.getTimeInMillis();
        
        
    }
}