Home » Java » Java Interview Questions on Polymorphism

Java Interview Questions on Polymorphism - 2

Question: 1

Find the output of below program

class A {
  void f1 () {
    System.out.print("class-A ");
  }
}
class B extends A {
  void f1 () {
    System.out.print("Class-B ");
  }
} 
 
class Main {
  public static void main (String s[]) {
    A refA = new A();
    A refB = new B();
 
    refA.f1();
    refB.f1();
  }
}

(A) class-A class-A
(B) class-B class-B
(C) class-B class-A
(D) class-A class-B

Level: Practitioner Category of MCQ: polymorphism

Question: 2

Which of the following is a correct implementation of method overloading?

(A) void methodA(){} int methodA(){}
(B) void methodA(){} void methodA(int a){}
(C) void methodA(){} int methodB(int a){}
(D) int methodA(){} int methodAA(i{}

Level: Practitioner Category of MCQ: polymorphism

Browse Java Categories

Datatype Variables Operators Decision Making Loops Methods Reference Variables Arrays Classes and Objects Abstract Class Singleton Class Modifiers Inheritance Overriding Polymorphism Abstraction Encapsulation Files and I/O TypeCasting Packages Exceptions Collections Framework Numbers Class Date & Time Regular Expressions Data Structures Interfaces Multithreading Other

Home » Java » Java Interview Questions on Polymorphism

Java Interview Questions on Polymorphism - 2

Browse Java Categories

MCQs

Problems

Projects

Compiler

Online Test