java.util.Calendar

package day14;

import com.sun.scenario.effect.impl.sw.sse.SSEBlend_SRC_OUTPeer;

import java.util.Calendar;
import java.util.Scanner;

/**
 * Created by admin on 2018/11/24.
 * * Calendar:它为特定瞬间与一组诸如 YEAR、MONTH、DAY_OF_MONTH、HOUR 等 日历字段之间的转换提供了一些方法，并为操作日历字段（例如获得下星期的日期）提供了一些方法。
 *
 * public int get(int field):返回给定日历字段的值。日历类中的每个日历字段都是静态的成员变量，并且是int类型。

 */
public class CalenderDemo {
    public static void main(String[] args) {
        Calendar rightNow = Calendar.getInstance();
        //获取当前时间
        int year = rightNow.get(Calendar.YEAR);
        int month = rightNow.get(Calendar.MONTH);
        int date = rightNow.get(Calendar.DATE);
        System.out.println(year + "-" + (month+1) + "-" + date);
        //获取5年后的今天的前五天
        rightNow.add(Calendar.YEAR, 5);
        rightNow.add(Calendar.DATE, -5);
        int year2 = rightNow.get(Calendar.YEAR);
        int month2 = rightNow.get(Calendar.MONTH);
        int date2 = rightNow.get(Calendar.DATE);
        System.out.println(year2+ "-" + (month2+1) + "-" + date2);
        //计算每年的2月最后一天
        Scanner sc = new Scanner(System.in);
        int year3 = sc.nextInt();
        rightNow.set(year3, 2, 1);
        rightNow.add(Calendar.DATE, -1);
        System.out.println(rightNow.get(Calendar.DATE));
    }
}