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package basic.stream;

import java.util.Arrays;

import java.util.Comparator;

import java.util.List;

import java.util.stream.Stream;

public class GenerateStreamPractice {

public static void main(String[] args) {

String[] alphabetArray = { "a", "b", "c" };

List<String> alphabetList = Arrays.asList("d", "e", "f");

// Array에서 stream 생성

Stream<String> arrayStream = Arrays.stream(alphabetArray);

// 병렬처리가 가능한 stream 생성

Stream<String> arrayParallelStream = Arrays.stream(alphabetArray).parallel();

// List에서 stream 생성

Stream<String> collectionStream = alphabetList.stream();

// 병렬처리가 가능한 stream 생성

Stream<String> collectionParallelStream = alphabetList.parallelStream();

// stream 붙이기

Stream<String> concatStream = Stream.concat(arrayStream, collectionStream);

concatStream

.filter(item -> item.contains("a") || item.contains("e"))

.map(String::toUpperCase)

.sorted(Comparator.reverseOrder())

.forEach(System.out::println);

}

}