Java Language
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Java Language Dates and Time (java.time.*) Calculate Difference between 2 LocalDates
Example
Use LocalDate and ChronoUnit:
LocalDate d1 = LocalDate.of(2017, 5, 1);
LocalDate d2 = LocalDate.of(2017, 5, 18);
now, since the method between of the ChronoUnit enumerator takes 2 Temporals as parameters so you can pass without a problem the LocalDate instances
long days = ChronoUnit.DAYS.between(d1, d2);
System.out.println( days );
