Solution: Implementation of interfaces

Class DateTime implements interfaces IDate and ITime

1 public interface IDate {
2     int getDay();
3     int getMonth();
4     int getYear();
5 }

1 public interface ITime {
2     int getHour();
3     int getMinute();
4     int getSecond();
5 }

 1 import java.time.LocalDateTime;
 2 import java.time.format.DateTimeFormatter;
 3 
 4 public class DateTime implements IDate, ITime {               // 2 interfaces are implemented
 5 
 6     private int day, month, year, hour, minute, second;
 7 
 8     DateTime() {
 9         LocalDateTime now = LocalDateTime.now();
10         day = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("dd")));
11         month = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("MM")));
12         year = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("yyyy")));
13         hour = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("HH")));
14         minute = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("mm")));
15         second = Integer.parseInt(now.format(DateTimeFormatter.ofPattern("ss")));
16     }
17 
18     public int getDay() {           // these methods have to be defined in class
19         return day;
20     }
21     public int getMonth() {
22         return month;
23     }
24     public int getYear() {
25         return year;
26     }
27     public int getHour() {
28         return hour;
29     }
30     public int getMinute() {
31         return minute;
32     }
33     public int getSecond() {
34         return second;
35     }
36 }

1 public class Main {
2 
3     public static void main(String[] args) {
4         DateTime dt = new DateTime();
5         System.out.println("Date: " + dt.getDay() + "." + dt.getMonth() + "." + dt.getYear()
6                  + "\tTime: " + dt.getHour() + ":" + dt.getMinute() + ":" + dt.getSecond());
7     }
8 }