Java控制台实现可视化日历小程序

直接上代码吧

 1 import java.text.DateFormat;
 2 import java.text.ParseException;
 3 import java.text.SimpleDateFormat;
 4 import java.util.Calendar;
 5 import java.util.Date;
 6 import java.util.GregorianCalendar;
 7  
 8 /**
 9  * 可视化日历程序
10  *
11  * @author HQ
12  * @e-mail ahmashq95@gmail.com
13  * @date 2018/10/11.
14  */
15 public class TestCalendar2 {
16     public static void main(String[] args) throws ParseException {
17         String string = "2018-10-11";
18  
19  
20         DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
21         Date date = dateFormat.parse(string);
22         Calendar calendar = new GregorianCalendar();
23         calendar.setTime(date);
24         int days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
25         int day = calendar.get(Calendar.DAY_OF_MONTH);
26  
27         System.out.println("日\t一\t二\t三\t四\t五\t六");
28         calendar.set(Calendar.DAY_OF_MONTH, 1);
29  
30         for (int i = 0; i < calendar.get(Calendar.DAY_OF_WEEK) - 1; i++) {
31             System.out.print("\t");
32         }
33  
34         for (int i = 1; i <= days; i++) {
35             //判断是否为输入的时间是否为今天
36             if(day==calendar.get(Calendar.DAY_OF_MONTH)){
37                //如果是今天的话用红色标记
38                 System.out.print("\u001b[31m"+calendar.get(Calendar.DAY_OF_MONTH) + "\t"+"\u001b[0m");
39             }else{
40                 System.out.print(calendar.get(Calendar.DAY_OF_MONTH) + "\t");
41             }
42  
43             if (calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) {
44                 System.out.println();   //换行
45             }
46             calendar.add(Calendar.DAY_OF_MONTH, 1);
47         }
48     }
49 }

运行结果：