//  BadLuckDays.java  (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2014-11-24  Java file created.
//  2014-12-30  Last modification.

//  This version of the Friday13.java program uses the new
//  time-related class LocalDate (available in Java 1.8 and later.)

import java.time.* ;

class BadLuckDays
{
   public static void main( String[] not_in_use )
   {
      LocalDate  date_of_today  =  LocalDate.now() ;

      // First we create a LocalDate object that contains the 13th day
      // of current month. This program can also print this, possibly
      // past, date.

      LocalDate  date_to_check = LocalDate.of( date_of_today.getYear(),
                                               date_of_today.getMonthValue(),
                                               13 ) ;

      int number_of_friday13_dates_to_print = 10 ;

      System.out.print( "\n The following are Fridays which also are"
                      + "\n the 13th days of a month: \n\n" ) ;

      while ( number_of_friday13_dates_to_print  >  0 )
      {
         if ( date_to_check.getDayOfWeek() == DayOfWeek.FRIDAY )
         {
            System.out.printf( "   %1$tF, %1$tA\n", date_to_check ) ;
            number_of_friday13_dates_to_print  --  ;
         }

         // The following statement creates a new LocalDate object that
         // contains the 13th day of the following month.

         date_to_check = date_to_check.plusMonths( 1 ) ;
      }
   }
}