SilverioMG

	@Test
	public void max() {
		Book book = bookList.stream()
				.max((book1, book2) -> { 
					return (book1.getPrice().compareTo(book2.getPrice()));
				})
				.orElse(null);
						
		System.out.println(book);
		assertEquals(book.getPrice(), 50.99);

SilverioMG

	@Test
	public void min() {
		Book book = bookList.stream()
				.min((book1, book2) ->  book1.getPrice().compareTo(book2.getPrice()))
				.orElse(null);
						
		System.out.println(book);
		assertEquals(book.getPrice(), 10);
	}

SilverioMG

	@Test
	public void sorted() {
		List<Book> books = bookList.stream()
				.sorted((book1, book2) -> book1.getAuthor().compareToIgnoreCase(book2.getAuthor()))
				.peek(System.out::println)
				.collect(Collectors.toList());
		
		assertTrue(books.get(0).getAuthor().contains("Bartolomé"));
		assertTrue(books.get(1).getAuthor().contains("José"));
		assertTrue(books.get(2).getAuthor().contains("Luís"));

SilverioMG

	@Test
	public void toArray() {
		//Como se hacía antes de los Streams (2 formas distintas):
		Book[] booksArray = bookList.toArray(Book[]::new);
		booksArray = bookList.toArray(new Book[bookList.size()]);
				
		//Como se hace con Streams (sirve para cualquier tipo de 'Collection', no solo para listas):
		booksArray = bookList.stream().toArray(Book[]::new);
		
		//Convertimos el array en un stream para visualizar su contenido más fácilmente sin tener que utilizar el 'for(Book book: booksArray)' de toda la vida:

SilverioMG

	@Test
	public void findFirst() {
		Book bookFirst = bookList.stream()
					.filter(book -> book.getPrice() >= 15)
					.peek(System.out::println)
					.findFirst()
					.orElse(null);
		
		assertTrue(bookFirst.getPrice() >= 15);
	}

SilverioMG

	@Test
	public void filter() {
		List<Book> books = bookList.stream()
				.filter(book -> book.getPrice() >= 15)
				.peek(book -> System.out.println(book))
				.collect(Collectors.toList());
		
		assertTrue(books.size() == 2);
	}

SilverioMG

	@Test
	public void mapAndForEach() {
		List<String> titles = bookList.stream()
				.map(book -> book.getTitle())
				.peek(title -> System.out.println(title))
				.collect(Collectors.toList());
		
		assertEquals(titles.size(), bookList.size());
		bookList.forEach(
				(book) -> {

SilverioMG

	@Test
	public void forEach() {
		bookList.stream()
			.forEach(book -> {
				double newPrice = book.getPrice();
				newPrice *= 2;
				book.setPrice(newPrice);
				System.out.println(book);
			});
	}

SilverioMG

	@Test
	public void map() {
		List<String> titles = bookList.stream()
				.map(book -> book.getTitle())
				.peek(title -> System.out.println(title))
				.collect(Collectors.toList());
		
		assertEquals(titles.size(), bookList.size());
	}

SilverioMG

	@Test
	public void peek() {
		List<Book> books = bookList.stream()
			.peek(book -> book.setAuthor("ATopeCode"))
			.peek(book -> System.out.println(book))
			.collect(Collectors.toList());
	}