how to compare two string dates with different date formats in java

1package javaapplication;
2
3import java.text.*;
4import java.util.Date;
5import java.text.ParseException;
6
7public class date {
8
9    public static void main(String[] args) {
10
11        String startDate = "21-08-2027";
12        String endDate = "21/08/2021";
13
14        try {
15
16            Date dateStart = new SimpleDateFormat("dd-MM-yyyy").parse(startDate);
17
18            Date dateEnd = new SimpleDateFormat("dd/MM/yyyy").parse(endDate);
19
20            if (dateStart.after(dateEnd)) {
21                System.out.println("Start Date is greater than End Date");
22
23            } else if (dateStart.before(dateEnd)) {
24
25                System.out.println("Start Date is less than End Date");
26
27            } else {
28
29                System.out.println("Start Date is Equal to End Date");
30            }
31
32        } catch (ParseException e) {
33            e.printStackTrace();
34        }
35
36    }
37}
38