Query date using a lambda expression

import java.time.LocalDate;
import java.time.Month;
import java.time.Year;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalAccessor;
import java.time.temporal.TemporalQuery;
//  w w w  .j a  va2  s . c  om
public class Main {
    public static void main(String[] args) {
        Month month = Month.valueOf("MARCH");

        int day = 10;
        LocalDate date = LocalDate.of(Year.now().getValue(), month, day);

        // Invoking the query without using a lambda expression.
        Boolean isFamilyVacation = date.query(new FamilyVacations());

        // Invoking the query using a lambda expression.
        Boolean isFamilyBirthday = date.query(FamilyBirthdays::isFamilyBirthday);

        if (isFamilyVacation.booleanValue() || isFamilyBirthday.booleanValue())
            System.out.printf("%s is an important date!%n", date);
        else
            System.out.printf("%s is not an important date.%n", date);
    }
}

class FamilyBirthdays {
  
  // Returns true if the passed-in date is the same as one of the
  // family birthdays. Because the query compares the month and day only,
  // the check succeeds even if the Temporal types are not the same.
  public static Boolean isFamilyBirthday(TemporalAccessor date) {
      int month = date.get(ChronoField.MONTH_OF_YEAR);
      int day   = date.get(ChronoField.DAY_OF_MONTH);
      
      // Angie's birthday is on April 3.
      if ((month == Month.APRIL.getValue()) && (day == 3))
          return Boolean.TRUE;

      // Sue's birthday is on June 18.
      if ((month == Month.JUNE.getValue()) && (day == 18))
          return Boolean.TRUE;

      // Joe's birthday is on May 29.
      if ((month == Month.MAY.getValue()) && (day == 29))
          return Boolean.TRUE;

      return Boolean.FALSE;
  }
}

class FamilyVacations implements TemporalQuery<Boolean> {
  
  // Returns true if the passed-in date occurs during one of the
  // family vacations. Because the query compares the month and day only,
  // the check succeeds even if the Temporal types are not the same.
  public Boolean queryFrom(TemporalAccessor date) {
      int month = date.get(ChronoField.MONTH_OF_YEAR);
      int day   = date.get(ChronoField.DAY_OF_MONTH);
      
      // Disneyland over Spring Break
      if ((month == Month.APRIL.getValue()) && ((day >= 3) && (day <= 8)))
          return Boolean.TRUE;

      // Smith family reunion on Lake Saugatuck
      if ((month == Month.AUGUST.getValue()) && ((day >= 8) && (day <= 14)))
          return Boolean.TRUE;

      return Boolean.FALSE;
  }
}
/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */