/**

* Copyright (c) 2024 Araf Karsh Hamid

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

* This program and the accompanying materials are dual-licensed under

* either the terms of the Eclipse Public License v1.0 as published by

* the Eclipse Foundation

* or (per the licensee's choosing)

* under the terms of the Apache 2 License version 2.0

* as published by the Apache Software Foundation.

*/

package java11;

import java.util.List;

import java.util.function.Predicate;

import java.util.stream.Collectors;

/**

* @author: Araf Karsh Hamid

* @version:

* @date:

*/

public class PredicateExample {

public static void main (String[] args) {

// Create a Fibonacci Number Series

List<Integer> fibonacci = List.of(1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181);

System.out.println("Fibonacci Series = "+fibonacci);

System.out.println("Print Even Fibonacci Numbers - Test 1");

Predicate<Integer> evenPredicate = number -> number%2==0;

String result = fibonacci.stream() // Stream Fibonacci Series

.filter(evenPredicate) // filter Even Numbers

.map(String::valueOf) // Convert each Integer to String

.collect(Collectors.joining(", ")); // Join with comma and space

System.out.print(result);

System.out.println("\nPrint Odd Fibonacci Numbers - Test 2");

String result2 = fibonacci.stream() // Stream Fibonacci Series

.filter(evenPredicate.negate()) // Filter Odd Numbers

.map(String::valueOf) // Convert each Integer to String

.collect(Collectors.joining(", ")); // Join with comma and space

System.out.print(result2);

System.out.println("\nPrint Even Fibonacci Numbers - Test 3");

String result3 = fibonacci.stream() // Stream Fibonacci Series

.filter(PredicateExample::isEven) // Filter Odd Numbers

.map(String::valueOf) // Convert each Integer to String

.collect(Collectors.joining(", ")); // Join with comma and space

System.out.print(result3);

System.out.println("\nPrint Odd Fibonacci Numbers - Test 4 >> Predicate.Not - New Feature in Java 11");

String result4 = fibonacci.stream() // Stream Fibonacci Series

.filter(Predicate.not(PredicateExample::isEven)) // Filter Odd Numbers

.map(String::valueOf) // Convert each Integer to String

.collect(Collectors.joining(", ")); // Join with comma and space

System.out.print(result4);

}

/**

* Checks if the Number is Even

* @param number

* @return

*/

public static boolean isEven(Integer number) {

return number%2==0;

}

}