How many objects are created due to inheritance in java?

Question

Let\'s say I have three classes:

class A {
    A() {
        // super(); 
        System.out.println(\"class A\");
    }
}
class B extends A {
    B() {
             


        

Answer 1

The super keyword enables a subclass to call the methods and fields of its superclass. It is not an instance of the superclass object but a way to tell the compiler which methods or fields to reference. The effect is the same as if the subclass is calling one of its own methods. Examples:

Consider a subclass Employee that extends its superclass Person:

public class Employee extends Person{

   public Employee()
   {
     //reference the superclass constructor 
     super(); 
   }

   public String getName()
   {
     //reference superclass behaviors
     return super.getFirstName() + " " + super.getLastName();
   }
 } 

The super keyword can be used to reference the constructer of the Person class or any of the behaviors or fields that it has access to (e.g., getFirstName() and getLastName()).