Java MCQs
What is/are the OOP concepts demonstrated by this code:
public class Test {
public static void main(String[] args){
Animal a = new Dog();
new Hospital().treatAnimal(a);
}
}
class Animal {
public void sayIt(){
}
}
class Dog extends Animal{
public void sayIt(){
System.out.println("I am Dog");
}
}
class Cat extends Animal{
public void sayIt(){
System.out.println("I am Cat");
}
}
class Hospital{
public void treatAnimal(Animal a){
if(a instanceof Dog){
a.sayIt();
} else {
a.sayIt();
}
}
}
Answer
Correct Answer: Polymorphism
Explanation:
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