feat: update Example_2_Part_2 in Unit_7.Examples.Example_2

Author: geekmanesh

src/Unit_7/Examples/Example_2/Example_2_Part_2/BaseClass.java

@@ -14,6 +14,7 @@ private void setName(String firstName, String lastName){
         this.firstName = firstName;
         this.lastName = lastName;
     }
+    @Override
     public String toString(){
         return  ("Firstname: " + firstName + " Lastname: " + lastName);
     }

src/Unit_7/Examples/Example_2/Example_2_Part_2/Example_7_2_2.java

@@ -1,9 +1,9 @@
 package Unit_7.Examples.Example_2.Example_2_Part_2;
 public class Example_7_2_2 {
     public static void main(String[] args) {
-        BaseClass bs = new BaseClass();
-        System.out.println(bs.toString());
-        BaseClass bs1 = new BaseClass("Hamid" , "goGool");
-        System.out.println(bs1.toString());
+        BaseClass base1 = new BaseClass();
+        System.out.println(base1);
+        BaseClass base2 = new BaseClass("Hamidreza" , "Ghareghani");
+        System.out.println(base2);
     }
 }