Explain me what is runtime polymorphism or dynamic method dispatch?
Submitted by: MuhammadIn Java, runtime polymorphism or dynamic method dispatch is a process in which a call to an overridden method is resolved at runtime rather than at compile-time. In this process, an overridden method is called through the reference variable of a superclass. Let's take a look at the example below to understand it better.
class Car {
void run()
{
System.out.println(“car is running”);
}
}
class Audi extends Car {
void run()
{
System.out.prinltn(“Audi is running safely with 100km”);
}
public static void main(String args[])
{
Car b= new Audi(); //upcasting
b.run();
}
}
Submitted by: Muhammad
class Car {
void run()
{
System.out.println(“car is running”);
}
}
class Audi extends Car {
void run()
{
System.out.prinltn(“Audi is running safely with 100km”);
}
public static void main(String args[])
{
Car b= new Audi(); //upcasting
b.run();
}
}
Submitted by: Muhammad
Read Online Java Software Engineer Job Interview Questions And Answers
Top Java Software Engineer Questions
☺ | Do you know how threadsafe is enum in Java? |
☺ | Explain me what is a good usecase of calling System.gc()? |
☺ | Explain me why doesn’t the following code generate a NullPointerException even when the instance is null? |
☺ | Do you know what is the advantage of generic collection? |
☺ | Tell us what do you mean by aggregation? |
Top Java Programming Language Categories
☺ | Core Java Interview Questions. |
☺ | Hibernate Interview Questions. |
☺ | Advanced Java Interview Questions. |
☺ | IBM WebSphere Interview Questions. |
☺ | Spring Framework Interview Questions. |