打印日历

 1 import java.io.IOException;
 2 import java.time.DayOfWeek;
 3 import java.time.LocalDate;
 4 
 5 public class test {
 6     public static void main(String[] args) throws IOException {
 7     LocalDate date = LocalDate.now();
 8 
 9     int month = date.getMonthValue();
10     int today = date.getDayOfMonth();
11 
12     date = date.minusDays(today-1);//得到today-1天前的日期
13     DayOfWeek weekday = date.getDayOfWeek();
14     int value = weekday.getValue();
15 
16     System.out.println("Mon Tue Wed Thu Fri Sat Sun");
17     for(int i =1;i<value; i++)
18         System.out.print("    ");
19 
20     while(date.getMonthValue()==month) {
21         System.out.printf("%3d", date.getDayOfMonth());
22         if (date.getDayOfMonth() == today)
23             System.out.print("*");
24         else
25             System.out.print(" ");
26         date = date.plusDays(1);
27         if (date.getDayOfWeek().getValue() == 1)
28             System.out.println();
29     }
31     }
32 }