/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.*;
import java.time.temporal.*;
import java.time.format.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
 
String output = 
LocalDate.parse(                               // Generate `LocalDate` object from String input.
             "23/2/2010" ,
             DateTimeFormatter.ofPattern( "d/M/uuuu" ) 
         )                                    
         .getDayOfWeek()                       // Get `DayOfWeek` enum object.
         .getDisplayName(                      // Localize. Generate a String to represent this day-of-week.
             TextStyle.SHORT_STANDALONE ,      // How long or abbreviated. Some languages have an alternate spelling for "standalone" use (not so in English).
             Locale.US                         // Or Locale.CANADA_FRENCH and such. Specify a `Locale` to determine (1) human language for translation, and (2) cultural norms for abbreviation, punctuation, etc.
         )  ;
 
System.out.println( "output: " + output ) ;
 
// NOTE: This IdeOne.com site’s JVM overrides any specified `Locale` with `Locale.US`.
 
	}
}

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