How to get day name of given date in Java?

Problem Description :

Write a program in Java that prints day name of given date.

Concept :

We are using below method of Calendar class that is present in java.util.* package.

public int get(int field) -> In this method we have to pass Calendar class constant DAY_OF_WEEK and finally this method returns one value from 1-7. After that using switch case we are printing day name.

Recommended :

Java Program :

package com.javamultiplex.datetime;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Scanner;

 * @author Rohit Agarwal
 * @category Date and Time
 * @problem How to get day name of given date?
public class GetWeekDayName {

 public static void main(String[] args) {

  Scanner input = null;
  try {
   input = new Scanner(;
   System.out.println("Enter date in dd/MM/yyyy format :");
   String date =;
   // If Date is valid, converting String to Date
   Date mydate = getValidDate(date);
   if (mydate != null) {
    // Creating Calendar class instance.
    Calendar calendar = Calendar.getInstance();
    // Converting Date to Calendar.
    int dayofWeek = calendar.get(Calendar.DAY_OF_WEEK);
    String dayName = getDayName(dayofWeek);
    System.out.println("Day : " + dayName);
   } else {
    System.out.println("Date is invalid.");
  } finally {
   if (input != null) {


 private static Date getValidDate(String date) {

  Date mydate = null;
  if (isValidDateFormat(date)) {
    * d -> Day of month 
    * M -> Month of year 
    * y -> Year
   DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
    * By default setLenient() is true. We should make it false for
    * strict date validations.
    * If setLenient() is true - It accepts all dates. If setLenient()
    * is false - It accepts only valid dates.
   try {
    mydate = dateFormat.parse(date);
   } catch (ParseException e) {
    mydate = null;
  return mydate;

 private static String getDayName(int dayofWeek) {

  String dayName = null;
  switch (dayofWeek) {
  case 1:
   dayName = "Sunday";
  case 2:
   dayName = "Monday";
  case 3:
   dayName = "Tuesday";
  case 4:
   dayName = "Wednesday";
  case 5:
   dayName = "Thursday";
  case 6:
   dayName = "Friday";
  case 7:
   dayName = "Saturday";
  return dayName;

 private static boolean isValidDateFormat(String date) {

   * Regular Expression that matches String with format dd/MM/yyyy. 
   * dd ->  01-31 
   * MM -> 01-12 
   * yyyy -> 4 digit number
  String pattern = "(0?[1-9]|[12][0-9]|3[01])\\/(0?[1-9]|1[0-2])\\/([0-9]{4})";
  boolean result = false;
  if (date.matches(pattern)) {
   result = true;
  return result;


Output :

Output of Java program that prints day name of given date.
Output - How to print day name of given date in Java?

References :

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

Tags : Date and Time problems, Get day name, Solution in Java,  String, Regular expressions, DateFormat, SimpleDateFormat, if else statement, switch statement, Calendar.

About Author:

I am simple guy with lot of ambitions. My main motive is to share whatever knowledge I have related to programming. With me you can easily learn how to solve any programming problem in Java.You can connect with me on social networking sites also.

Let's Get Connected: Linkedin | Facebook |

How to get day name of given date in Java? How to get day name of given date in Java? Reviewed by Rohit Agarwal on 12/07/2016 Rating: 5

No comments:

Please provide your valuable comments. If you have any suggestion please share with me I will work on it and if you have any question or doubt please ask, don't hesitate. I am your friend, i will clarify all your doubts.

Powered by Blogger.