JAVA-14232 JAVA-19120 Move article Lambda Expression vs. Anonymous Inner Class to core-java-lambdas module (#13603)

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

* Update README.md

---------

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

core-java-modules/core-java-lambdas/README.md

@@ -10,3 +10,4 @@
 - [Serialize a Lambda in Java](https://www.baeldung.com/java-serialize-lambda)
 - [Convert Anonymous Class into Lambda in Java](https://www.baeldung.com/java-from-anonymous-class-to-lambda)
 - [When to Use Callable and Supplier in Java](https://www.baeldung.com/java-callable-vs-supplier)
+- [Lambda Expression vs. Anonymous Inner Class](https://www.baeldung.com/java-lambdas-vs-anonymous-class)

core-java-modules/core-java-lambdas/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-lambdas/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();
+    }
+}