/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.*;
import java.time.format.*;
import java.time.temporal.*;
 
/* 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
	{
 
// Shows how `ChronoUnit.between` calculates with the Half-Open approach where the beginning is inclusive while the ending is exclusive.
 
LocalDate start = LocalDate.of( 2017 , Month.JANUARY , 1 );
LocalDate stop = LocalDate.of( 2017 , Month.FEBRUARY , 1 );  // Runs up to, but does not include, first day of following month.
long daysInJanuary = ChronoUnit.DAYS.between( start , stop );  // Returns 31, not 32.
 
System.out.println( "start.toString(): " + start );
System.out.println( "stop.toString(): " + stop );
System.out.println( "daysInJanuary: " + daysInJanuary );
 
	}
}

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