Calculate the number of days difference between localdates, which is convenient and fast

1. Calculation LocalDate The method of the difference between days

public static Long claculateGapBetweenTwoLocalDate(LocalDate localDateStart, LocalDate localDateEnd) {
    
	Duration duration = Duration.between(localDateStart.atStartOfDay(), localDateEnd.atStartOfDay());
	return duration.toDays();
}

2. Example of calculation process and results

1. You can use the method to convert the string to LocalDate：

   public static LocalDate transferString2LocalDate(String s) {
         
   	DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
   	return LocalDate.parse(s, fmt);
   }
   

2. With 2022-06-01 to 2022-06-03 For example ：

   public static void main(String[] args) {
         
       LocalDate start = transferString2LocalDate("2022-06-01");
       LocalDate end = transferString2LocalDate("2022-06-03");
       System.out.println(claculateGapBetweenTwoLocalDate(start, end));
   }
   

3. Running results

   2