Some examples for diving into lambda expressions, and some streams experiments (e29b9d06) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch10c/Ch10c.java

+2 −2

Changes for src/main/java/ch10c/Ch10c.java: 2 added lines, 2 removed lines.
Original line number	Diff line number	Diff line
		@@ -11,13 +11,13 @@ public class Ch10c {
		}
		}

		void forEachExample() {
		static void forEachExample() {
		List<String> allColors = List.of("Red", "Blue", "Yellow");
		allColors.forEach(color -> System.out.println(color));
		}

		public static void main(String[] args) {
		badFor4();
		forEachExample();
		}

		// 2, 3, 4, 5

0 → 100644

+23 −0

Changes for src/main/java/ch10c/HelloLambda.java: 23 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		package ch10c;

		import java.util.List;
		import java.util.stream.Collectors;

		public class HelloLambda {
		public static void main(String[] args) {
		helloLambda();
		}

		static void helloLambda() {
		List<String> strings = List.of("I", "am", "a", "list", "of", "Strings");

		List<String> result = strings.stream()
		.sorted((s1, s2) -> {
		return s1.compareToIgnoreCase(s2);
		})
		.limit(4)
		.collect(Collectors.toList());
		System.out.println("result = " + result);

		}
		}

0 → 100644

+27 −0

Changes for src/main/java/ch10c/StreamStuff.java: 27 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		package ch10c;

		import java.util.Arrays;
		import java.util.Collections;
		import java.util.List;
		import java.util.stream.Collectors;
		import java.util.stream.Stream;

		public class StreamStuff {
		public static void main(String[] args) {
		List<String> coffees = List.of("Cappuccino",
		"Americano", "Espresso", "Cortado", "Mocha",
		"Cappuccino", "Flat White", "Latte");


		Stream<String> stream1 = coffees.stream()
		.filter(s -> s.endsWith("o"))
		.sorted();

		System.out.println(stream1.distinct()
		.collect(Collectors.toList()));

		System.out.println(stream1.collect(Collectors.toList()));

		List<Integer> integers = Collections.unmodifiableList(Arrays.asList(1));
		}
		}