# 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.

## Problem

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.

Example

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

#### Returns

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.

### Constraints

2000 <= year <= 3000

Sample Input

08 05 2015

Sample Output

WEDNESDAY

#### Explanation

The day on August 15th 2015 was WEDNESDAY.

## Solution –Java Date and Time

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;
import java.time.LocalDate;
//===========================SOLUTION==============================//
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();
cal.set(Calendar.MONTH,month-1);
cal.set(Calendar.DAY_OF_MONTH,day);
cal.set(Calendar.YEAR,year);
String dayOfWeek = cal.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.LONG, Locale.US).toUpperCase();
return dayOfWeek;

}

}
//=============================SOLUTION-END=============================//
public class Solution {
public static void main(String[] args) throws IOException {
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

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);

bufferedWriter.write(res);
bufferedWriter.newLine();