Java: Count the number of days between two given years

Last update on May 19 2025 13:11:11 (UTC/GMT +8 hours)

46. Count Days Between Years

Write a Java program to count the number of days between two years.

Sample Solution:

Java Code:

import java.util.Scanner;
public class test {
 public static void main(String[] args) {
   System.out.println("Input start year:");
   Scanner s = new Scanner(System.in);
   int fy = s.nextInt();
   System.out.println("\nInput end year:");
   s = new Scanner(System.in);
   int ly = s.nextInt();
   if (ly > fy) {
     for (int i = fy; i <= ly; i++) {
       System.out.println("Year: " + i + " = " + number_of_days(i));
     }
   } else {
     System.out.println("End year must be greater than first year!");
   }
 }
 public static int number_of_days(int year) {
   if (is_Leap_Year(year)) return 366;
   else return 365;
 }
 public static boolean is_Leap_Year(int year) {
   return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
 }
}

Sample Output:

Input start year:
 2010

Input end year:
 2022
Year: 2010 = 365
Year: 2011 = 365
Year: 2012 = 366
Year: 2013 = 365
Year: 2014 = 365
Year: 2015 = 365
Year: 2016 = 366
Year: 2017 = 365
Year: 2018 = 365
Year: 2019 = 365
Year: 2020 = 366
Year: 2021 = 365
Year: 2022 = 365

Flowchart:

Flowchart: Java DateTime, Calendar Exercises - Count the number of days between two given years.

For more Practice: Solve these Related Problems:

Write a Java program to calculate the total number of days between two given years.
Write a Java program to compute the difference in days between the first day of two specified years.
Write a Java program to count the number of days between the start of one year and the start of another year.
Write a Java program to determine the number of days between two years while accounting for leap years.

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