[Ch10c] Regex example, as if their poor brains weren't already exploding (026eebb2) · Commits · examples / Head First Java 3rd Edition

src/test/java/ch10c/JukeboxQueriesTest.java

+18 −0

Changes for src/test/java/ch10c/JukeboxQueriesTest.java: 18 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -5,6 +5,7 @@ import org.junit.jupiter.api.Test;

		import java.util.*;
		import java.util.function.Function;
		import java.util.regex.Pattern;
		import java.util.stream.Collectors;

		import static java.util.stream.Collectors.*;
		@@ -24,6 +25,7 @@ class JukeboxQueriesTest {
		System.out.println(allSongs);
		}

		// STRAIGHTFORWARD
		// Sorting, Collect to List
		@Test
		void shouldOrderByLeastPlayed() {
		@@ -36,6 +38,22 @@ class JukeboxQueriesTest {
		System.out.println(result);
		}

		// REGEX
		@Test
		void shouldFindNonStandardCharacters() {
		List<Song> allSongs = songs.getSongs();

		// Includes space!!
		Pattern pattern = Pattern.compile("[^A-Za-z0-9 ]");

		List<String> result = allSongs.stream()
		.map(Song::getArtist)
		.filter(artist -> pattern.matcher(artist).find())
		.collect(Collectors.toList());

		System.out.println("result = " + result);
		}

		@Test
		void shouldQueryForGenre() {
		List<Song> allSongs = songs.getSongs();