Java 19120 Code review changes (#13747)

* JAVA-19120 Move article Lambda Expression vs. Anonymous Inner Class to core-java-8-2 module

---------

Co-authored-by: Anastasios Ioannidis <121166333+anastasiosioannidis@users.noreply.github.com>

core-java-modules/core-java-8-2/README.md

@@ -11,5 +11,6 @@ This module contains articles about Java 8 core features
 - [Convert Between Byte Array and UUID in Java](https://www.baeldung.com/java-byte-array-to-uuid)
 - [Create a Simple “Rock-Paper-Scissors” Game in Java](https://www.baeldung.com/java-rock-paper-scissors)
 - [VarArgs vs Array Input Parameters in Java](https://www.baeldung.com/varargs-vs-array)
+- [Lambda Expression vs. Anonymous Inner Class](https://www.baeldung.com/java-lambdas-vs-anonymous-class)
 - [Java Helper vs. Utility Classes](https://www.baeldung.com/java-helper-vs-utility-classes)
 - [[<-- Prev]](/core-java-modules/core-java-8)

core-java-modules/core-java-8-2/src/main/java/com/baeldung/anonymousclass/AnonymousClassExample.java

@@ -0,0 +1,14 @@
+package com.baeldung.anonymousclass;
+
+public class AnonymousClassExample{
+
+    public static void main(String[] args){
+        Thread t1 = new Thread(new Runnable(){
+            @Override
+            public void run() {
+                System.out.println("Thread: "+Thread.currentThread().getName()+" started");
+            }
+        });
+        t1.start();
+    }
+}

core-java-modules/core-java-8-2/src/main/java/com/baeldung/lambdaexpression/LambdaExpressionExample.java

@@ -0,0 +1,9 @@
+package com.baeldung.lambdaexpression;
+
+public class LambdaExpressionExample{
+
+    public static void main(String[] args){
+        Thread t1 = new Thread(()->System.out.println("Thread: "+Thread.currentThread().getName()+" started"));
+        t1.start();
+    }
+}