FindDaysBetweenTwoDates.java

package com.codecafe.java8.datetime;

import java.time.LocalDate;
import java.time.Month;
import java.time.temporal.ChronoUnit;

public class FindDaysBetweenTwoDates {

  public static void main(String[] args) {
    LocalDate date1 = LocalDate.of(1990, Month.AUGUST, 26);

    LocalDate date2 = LocalDate.now();

    long numberOfDaysBetween = ChronoUnit.DAYS.between(date1, date2);

    System.out.println("Number of days between " + date1 + " and " + date2 + " = " + numberOfDaysBetween);

    String dateBeforeString = "2021-05-31";
    String dateAfterString = "2021-06-09";

    // parse the dates
    LocalDate dateBefore = LocalDate.parse(dateBeforeString);
    LocalDate dateAfter = LocalDate.parse(dateAfterString);

    numberOfDaysBetween = ChronoUnit.DAYS.between(dateBefore, dateAfter);

    System.out.println("Number of days between " + dateBefore + " and " + dateAfter + " = " + numberOfDaysBetween);
  }

}