LocalDate类

Posted 2020-11-21 joey777210

LocalDate类与Date类不同。Date类是距离一个固定时间点的毫秒数（UTC 1970.1.1 00:00:00）

Date类表示时间点，LocalDate类用来表示日历表示法。

import java.time.DayOfWeek;
import java.time.LocalDate;

public class Demo3_3_2 {

    public static void main(String[] args)  {
        LocalDate date = LocalDate.now();
        int month = date.getMonthValue();
        int today = date.getDayOfMonth();
        
        date = date.minusDays(today - 1);
        
        DayOfWeek weekday = date.getDayOfWeek();
        System.out.println(weekday);
        int weekdayv = weekday.getValue();
        System.out.println("Mon    Tue    Wed    Thu    Fri    Sat    Sun");
        for(int i = 1;i<weekdayv;i++) {
            System.out.print("    ");
        }
        
        while(date.getMonthValue() == month) {
            System.out.printf("%3d",date.getDayOfMonth());
            if(date.getDayOfMonth() == today) {
                System.out.print("*	");
            }else {
                System.out.print("	");
            }
            date = date.plusDays(1);
            if(date.getDayOfWeek().getValue() == 1) {
                System.out.println();
            }
        }
        if(date.getDayOfWeek().getValue() != 1) {
            System.out.println();
        }
    }
}