java编写本月日历

代码如下：

import java.time.*;


public class Main {

    public static void main(String arg[]){
        LocalDate date = LocalDate.now();
        int month = date.getMonthValue();
        int today = date.getDayOfMonth();

        date = date.minusDays(today-1);
        DayOfWeek weekday = date.getDayOfWeek();
        int value = weekday.getValue();

        System.out.println("Mon Tue Wed thu Fri Sat Sun");
        for (int  i=1;i<value;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();

    }
}

形式如下：

Mon Tue Wed thu Fri Sat SUn
  1   2   3   4   5   6   7 
  8   9  10  11  12  13  14 
 15  16  17  18  19  20  21 
 22  23  24  25  26* 27  28 
 29  30  31