SCJP Module-4 Question-10
The program given below tests your knowledge of Inheritance in Java and prepares you for SCJP examination.
The program given below tests your knowledge of Inheritance in Java and prepares you for SCJP examination.Given below the sample code :
1. class Vehicle {
2.
public void printSound() {
3.
System.out.print("vehicle");
4.
}
5.
}
6.class Car extends Vehicle {
7.
public void printSound() {
8.
System.out.print("car");
9.
}
10.}
11.
class Bike extends Vehicle {
12.public void printSound() {
13.System.out.print("bike");
14.}
15.}
16.public class Test1 {
17.public static void main(String[] args) {
18.Vehicle v = new Car();
19.Bike b = (Bike) v;
20.v.printSound();
21.b.printSound();
22.}
23.}
What will be the output ?
A) Compilation fails.
B) "car" is printed.
C) "vehiclecar" is printed.
D) "vehiclebike" is printed.
Answer :
(A)
Explanation :
Car object cannot be cast to Bike (error at line number 19).
