Java Date and Time | HackerRank Solution

Hello coders, today we are going to solve Java Date and Time HackerRank Solution.

The Calendar class is an abstract class that provides methods for converting between a specific instant in time and a set of calendar fields such as YEAR, MONTH, DAY_OF_MONTH, HOUR, and so on, and for manipulating the calendar fields, such as getting the date of the next week.

Read about String to Date Conversion in Javahere

Java Date and Time


You are given a date. You just need to write the method, getDay, which returns the day on that date. To simplify your task, we have provided a portion of the code in the editor.


month = 8 day = 14 year = 2017

The method should return MONDAY as the day on that date.

Function Description

Complete the findDay function in the editor below.

findDay has the following parameters:

  • int: month
  • int: day
  • int: year


string: the day of the week in capital letters

Input Format

A single line of input containing the space separated month, day and year, MM DD YYYY respectively, in format.


2000 <= year <= 3000

Sample Input

 08 05 2015

Sample Output



The day on August 15th 2015 was WEDNESDAY.

Solution – Java Date and Time

import java.math.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import static;
import static;
import java.time.LocalDate;
class Result {

     * Complete the 'findDay' function below.
     * The function is expected to return a STRING.
     * The function accepts following parameters:
     *  1. INTEGER month
     *  2. INTEGER day
     *  3. INTEGER year

    public static String findDay(int month, int day, int year) {

        Calendar cal = Calendar.getInstance();
String dayOfWeek = cal.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.LONG, Locale.US).toUpperCase();
        return dayOfWeek;


public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(;
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        String[] firstMultipleInput = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

        int month = Integer.parseInt(firstMultipleInput[0]);

        int day = Integer.parseInt(firstMultipleInput[1]);

        int year = Integer.parseInt(firstMultipleInput[2]);

        String res = Result.findDay(month, day, year);



Disclaimer: The above Problem ( Java Date and Time ) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.

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