public class Demo3 {
    public static void main(String[] args) {
       //创建Calendar对象
        Calendar calendar = Calendar.getInstance();
        System.out.println(calendar.getTime().toString());
        //获取时间信息
        //年
        int i = calendar.get(Calendar.YEAR);
        System.out.println(i);
        //月  从0-11
        int i1 = calendar.get(Calendar.MONTH);
        System.out.println(i1+1);
        //日
        int i2 = calendar.get(Calendar.DAY_OF_MONTH);
        System.out.println(i2);
        //小时
        int i3 = calendar.get(Calendar.HOUR_OF_DAY);
        System.out.println(i3);
        //分钟
        int i4 = calendar.get(Calendar.MINUTE);
        System.out.println(i4);
        //秒
        int i5 = calendar.get(Calendar.SECOND);
        System.out.println(i5);

        //修改时间
        Calendar calendar1 = Calendar.getInstance();
        calendar1.set(Calendar.DAY_OF_MONTH,5);
        System.out.println(calendar1.getTime().toString());

        //基于当前时间修改
        calendar1.add(Calendar.HOUR_OF_DAY,1);
        System.out.println(calendar1.getTime().toString());

        //补充
        int actualMaximum = calendar1.getActualMaximum(Calendar.DAY_OF_MONTH);
        int actualMinimum = calendar1.getActualMinimum(Calendar.DAY_OF_MONTH);
        System.out.println(actualMaximum);
        System.out.println(actualMinimum);

    }
}