日期类的使用

  import java.util.Calendar;
  import java.util.GregorianCalendar;
  /**
  测试日期类的使用
  */
  public class TestCanlendar {
  public static void main(String[] args) {
      
      Calendar calendar = new GregorianCalendar(2021, 01, 01, 05, 59, 59);
      int year = calendar.get(Calendar.YEAR);
      int month = calendar.get(Calendar.MONTH);
      int weekday = calendar.get(Calendar.DAY_OF_WEEK);
      
      System.out.println(year);
      System.out.println(month);
      System.out.println(weekday);
  }
}