Failing for loop examples (47466fbd) · Commits · examples / Head First Java 3rd Edition

.idea/gradle.xml

+1 −1

Changes for .idea/gradle.xml: 1 added line, 1 removed line.
Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@
		<component name="GradleSettings">
		<option name="linkedExternalProjectsSettings">
		<GradleProjectSettings>
		<option name="delegatedBuild" value="true" />
		<option name="delegatedBuild" value="false" />
		<option name="testRunner" value="PLATFORM" />
		<option name="distributionType" value="DEFAULT_WRAPPED" />
		<option name="externalProjectPath" value="$PROJECT_DIR$" />

+56 −0

Changes for src/main/java/Ch10c.java: 56 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		import java.util.Arrays;
		import java.util.List;

		public class Ch10c {
		@@ -8,8 +9,63 @@ public class Ch10c {
		System.out.println(color);
		}
		}

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

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

		// 2, 3, 4, 5
		static void badFor1() {
		int[] ints = {1, 2, 3, 4, 5};
		for (int i = 1; i < ints.length; i++) {
		System.out.println(ints[i]);
		}
		}

		//Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 5 out of bounds for length 5
		// at Ch10c.badFor2(Ch10c.java:31)
		// at Ch10c.main(Ch10c.java:18)
		static void badFor2() {
		int[] ints = {1, 2, 3, 4, 5};
		for (int i = 0; i <= ints.length; i++) {
		System.out.println(ints[i]);
		}
		}

		// Doesn't compile
		static void badFor3() {
		// int[] ints = {1, 2, 3, 4, 5};
		// for (int i = 0; i < ints.size(); i++) {
		// System.out.println(ints[i]);
		// }
		}

		// [I@c818063, [I@c818063, [I@c818063, [I@c818063, [I@c818063
		static void badFor4() {
		int[] ints = {1, 2, 3, 4, 5};
		for (int anInt : ints) {
		System.out.println(ints);
		}
		}

		// doesn't compile
		static void badFor5() {
		// int[] ints = {1, 2, 3, 4, 5};
		// for (int int : ints) {
		// System.out.println(ints);
		// }
		}

		static void badFor6() {
		int[] ints = {1, 2, 3, 4, 5};
		Arrays.stream(ints).forEach(value -> System.out.println(value));
		}



		}