Test cases for examples in article "A guide to Java 8 forEach" (#769)

* An example of a test using a WebAppConfiguration annotation

* Giving the test the appropriate formatting

* A example of a test that uses WebAppConfiguration without the need of a MockMvc object

* Adding model class and test cases class to show the use of the forEach loop.
For article "A guide to Java 8 forEach"

* Examples used in article "Guide to Java 8 forEach"

core-java/src/test/java/com/baeldung/java8/Java8ForEachTest.java

@@ -0,0 +1,52 @@
+package com.baeldung.java8;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+import org.junit.Test;
+
+public class Java8ForEachTest {
+
+    @Test
+    public void compareForEachMethods_thenPrintResults() {
+
+        List<String> names = new ArrayList<>();
+        names.add("Larry");
+        names.add("Steve");
+        names.add("James");
+        names.add("Conan");
+        names.add("Ellen");
+
+        // Java 5 - for-loop
+        System.out.println("--- Enhanced for-loop ---");
+        for (String name : names) {
+            System.out.println(name);
+        }
+
+        // Java 8 - forEach
+        System.out.println("--- forEach method ---");
+        names.forEach(name -> System.out.println(name));
+
+        // Anonymous inner class that implements Consumer interface
+        System.out.println("--- Anonymous inner class ---");
+        names.forEach(new Consumer<String>() {
+            public void accept(String name) {
+                System.out.println(name);
+            }
+        });
+
+        // Create a Consumer implementation to then use in a forEach method
+        Consumer<String> consumerNames = name -> {
+            System.out.println(name);
+        };
+        System.out.println("--- Implementation of Consumer interface ---");
+        names.forEach(consumerNames);
+
+        // Print elements using a Method Reference
+        System.out.println("--- Method Reference ---");
+        names.forEach(System.out::println);
+
+    }
+
+}