collection lambdas added

classlevel/lambdaexpressions/collections/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>collections</name>
+	<comment>Project collections created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

classlevel/lambdaexpressions/collections/build.gradle

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+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java project to get you started.
+ * For more details take a look at the Java Quickstart chapter in the Gradle
+ * user guide available at https://docs.gradle.org/4.9/userguide/tutorial_java_projects.html
+ */
+
+plugins {
+    // Apply the java plugin to add support for Java
+    id 'java'
+
+    // Apply the application plugin to add support for building an application
+    id 'application'
+}
+
+// Define the main class for the application
+mainClassName = 'App'
+
+dependencies {
+    // This dependency is found on compile classpath of this component and consumers.
+    // compile 'com.google.guava:guava:23.0'
+
+    // Use JUnit test framework
+    testCompile 'junit:junit:4.12'
+}
+
+// In this section you declare where to find the dependencies of your project
+repositories {
+    // Use jcenter for resolving your dependencies.
+    // You can declare any Maven/Ivy/file repository here.
+    jcenter()
+}

classlevel/lambdaexpressions/collections/settings.gradle

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+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ * 
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user guide at https://docs.gradle.org/4.9/userguide/multi_project_builds.html
+ */
+
+rootProject.name = 'collections'

classlevel/lambdaexpressions/collections/src/main/java/App.java

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+import java.util.HashMap;
+import java.util.Map;
+
+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+public class App {
+
+  public static void main(String[] args) {
+    Map<String, Integer> testlist = new HashMap<String, Integer>();
+    testlist.put("one", 1);
+    testlist.put("two", 2);
+    testlist.put("three", 3);
+    testlist.forEach((k, v) -> System.out.println(k + ":" + v));
+
+  }
+}

classlevel/lambdaexpressions/collections/src/test/java/AppTest.java

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+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class AppTest {
+    @Test public void testAppHasAGreeting() {
+        App classUnderTest = new App();
+        assertNotNull("app should have a greeting", classUnderTest.getGreeting());
+    }
+}