What is Overloading and Overriding?

Question

Accepted Answer

Overloading is using the same method name with different parameters. Overriding is replacing a method in a subclass.

Overloading is used to have multiple methods with the same name but different parameters.
Overriding is used to replace a method in a subclass with a new implementation.
Overloading is resolved at compile-time while overriding is resolved at runtime.
Example of overloading: public void print(int num) and public void print(String str)
Example of overriding: public class Animal { public void makeSound() { System.out.println('Animal sound'); } } public class Dog extends Animal { public void makeSound() { System.out.println('Bark'); } }

Accepted Answer

Overloading - Overloading means methods with the same name, but different signatures where the signature can differ by the number of input parameters or type of input parameters or both. Overloading is related to compile-time or static polymorphism.
 
 Overriding - Overriding is a feature that allows a subclass or child class to provide implementation of a method that is already provided by one of its superclasses or parent classes. We can achieve runtime polymorphism using Overriding.

What is Overloading and Overriding?

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