Updated example

Part 1.1 - Introduction.md

@@ -357,11 +357,15 @@ Person person1 = new Person("Alice", 25);
 Person person2 = person1;  // person2 is a reference to the same object as person1
 
 System.out.println("Before change:");
-System.out.println("Person1: " + person1);
-System.out.println("Person2: " + person2);
+System.out.println("Person1: " + person1); // Person1: Name: Alice, Age: 25
+System.out.println("Person2: " + person2); // Person2: Name: Alice, Age: 25
 
 // Changing person2's name also affects person1 because both reference the same object
 person2.setName("Bob");
+
+System.out.println("After change:");
+System.out.println("Person1: " + person1); // Person1: Name: Bob, Age: 25
+System.out.println("Person2: " + person2); // Person2: Name: Bob, Age: 25
 ```