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This question belongs to Java Program Inheritence
Inheritence
?

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();
      }
}

Answer & Solution
Correct Answer: Option B
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2 Comments
Vishal Lakra
Vishal Lakra 7 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
Vishal Lakra
Vishal Lakra 7 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