How to check if array contains three consecutive dates in java?

To check to find whether a given array contains three consecutive dates:

• Convert the given array into a list of type LocalDate.
• Using the methods of the LocalDate class compare ith, i+1th and i+1th, i+2th elements of the list if equal the list contain 3 consecutive elements.

Example

Live Demo

import java.time.LocalDate; import java.time.Month; import java.util.ArrayList; import java.util.Collections; import java.util.Date; import java.util.List; public class ConsicutiveDate {    public static void main(String args[]) {       String[] dates = {"5/12/2017", "6/12/2017", "7/12/2017"};       List<LocalDate> localDateList = new ArrayList<>();       for (int i = 0; i<dates.length; i++) {          String[] data = dates[i].split("/");          Month m = Month.of(Integer.parseInt(data[1]));          LocalDate localDate =             LocalDate.of(Integer.parseInt(data[2]),m,Integer.parseInt(data[0]));          localDateList.add(localDate);          Date date = java.sql.Date.valueOf(localDate);       }       System.out.println("Contents of the list are ::"+localDateList);       Collections.sort(localDateList);       for (int i = 0; i < localDateList.size() - 1; i++) {          LocalDate date1 = localDateList.get(i);          LocalDate date2 = localDateList.get(i + 1);          if (date1.plusDays(1).equals(date2)) {             System.out.println("Consecutive Dates are: " + date1 + " and " + date2);          }       }    } }

Output

Contents of the list are ::[2017-12-05, 2017-12-06, 2017-12-07] Consecutive Dates are: 2017-12-05 and 2017-12-06 Consecutive Dates are: 2017-12-06 and 2017-12-07