Lambdas_05.java

package com.ucguy4u.functional.java;

import java.util.Arrays;
import java.util.List;
import static java.util.stream.Collectors.toList;
import java.util.stream.Stream;

/**
 *
 * @author Chauhanuday
 */
public class Lambdas_05 {

	public static void main(String[] args) {

		Arrays.asList("red", "green", "blue").stream().sorted().findFirst().ifPresent(System.out::println);
		// example of Stream.of with a filter
		Stream.of("apple", "pear", "banana", "cherry", "apricot").filter(fruit -> {
			// System.out.println("filter: " + fruit);
			return fruit.startsWith("a"); // predicate
		})
				// if the foreach is removed, nothing will print,
				// the foreach makes it a terminal event
				.forEach(fruit -> System.out.println("Starts with A: " + fruit));

		// using a stream and map operation to create a list of words in caps
		List<String> collected = Stream.of("Java", " Rocks").map(string -> string.toUpperCase()).collect(toList());
		System.out.println(collected.toString());
	}
}