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Examveda

What will be the result of compiling and executing the following program code?
class Vehicle{
      public void printSound(){
            System.out.print("vehicle");
      }
}
class Car extends Vehicle{
      public void printSound(){
            System.out.print("car");
      }
}
class Bike extends Vehicle{
      public void printSound(){
            System.out.print("bike");
      }
}
public class Test{
      public static void main(String[] args){
            Vehicle v = new Car();
            Bike b = (Bike) v;
        
            v.printSound();
            b.printSound();
      }
}

A. Compilation fails.

B. ClassCastException exception is thrown at runtime.

C. "vehiclecar" is printed.

D. "vehiclebike" is printed.

E. "carcar" is printed.

Answer: Option B


This Question Belongs to Java Program >> Inheritence

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Comments ( 2 )

  1. Vishal Lakra
    Vishal Lakra :
    4 years ago

    Object of child class some of parent class is called inheritance.
    you have done mistake
    vehicle v = new Bike();
    This is the answer

  2. Vishal Lakra
    Vishal Lakra :
    4 years ago

    Inheritance define as object of child class acquire all the properties of parent class . It syntax is extends
    for example :
    class A extends B
    Using interface it is a blue print of class it syntax is implements.
    for example
    class A implements B

Related Questions on Inheritence

What is inheritance in Java?

A. The process of acquiring properties and behaviors of one class by another

B. The process of creating objects

C. The process of encapsulation

D. The process of overloading methods