Find Day of the week from any Calendar date using Java code

 

find-day-of-week-from-calendar-date

If we have a date, and need to find which day of the week it was instantly, that would a really useful function, isn't it? This is also a useful function which can be used on a webpage having Calendar logic, or a Delivery website which wants to show which is the day of the week on which your order will be delivered. 

Java has a very useful inbuilt function which we can use to get this functionality, and we'll show you how!

For utilizing the functionality, you have to import a Java library: 

import java.time.LocalDate;

Once you have the library, the code is really easy. Let's write a small working function.


/**
 * Function to return Day of the week
 * @author computengine.com
 * @param month
 * @param day
 * @param year
 * @return
 */
public static String findDay(int month, int day, int year) {
	
	LocalDate ldt = LocalDate.of(year, month, day);
	return String.valueOf(ldt.getDayOfWeek());

}

That's it! Isn't that a really simple logic. That's the magic of Java libraries doing all the heavy lifting. 

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