package calendar;

import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class CalendarDemo {
 public static void main(String[] args) {
 String date = "2023-11-11 12:20:00";
 System.out.println(getWeek(strToDate(date)));
 System.out.println(getHour(strToDate(date)));
 Calendar calendar=Calendar.getInstance();
 calendar.set(Calendar.MONTH,2);
 int month=calendar.get(Calendar.MONTH);
 System.out.println(month);
 }

 public static Date strToDate(String strDate) {
 SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 ParsePosition pos = new ParsePosition(0);
 Date strtodate = formatter.parse(strDate, pos);
 return strtodate;
 }
 // 周日:1
 // 周1:2

 public static int getWeek(Date date) {
 Calendar calendar = Calendar.getInstance();
 calendar.setTime(date);
 int week = calendar.get(Calendar.DAY_OF_WEEK);
 return week;
 }

 public static int getHour(Date date) {
 Calendar calendar = Calendar.getInstance();
 calendar.setTime(date);
 int HOUR_OF_DAY = calendar.get(Calendar.HOUR_OF_DAY);
 return HOUR_OF_DAY;
 }
}