Java Method Overriding Tutorial

Method declaration in child class that already present in base class known as overriding method.ex: runtime polymorphism.

Final and Static keyword cannot be overridden.

Constructors cannot be overridden.

Method Overriding Example


class Animal
{
    public void eat()
    {
        System.out.println("Generic Animal eating");
    }
}

class Dog extends Animal
{
    public void eat()   //eat() method overriden by Dog class.
    {
        System.out.println("Dog eat meat");
    }
}

Method Overloading	Method Overriding
Parameter must be different and name must be same.	Both name and parameter must be same.
Compile time polymorphism.	Runtime polymorphism.
Increase readability of code.	Increase reusability of code.
Access specifier can be changed.	Access specifier cannot be more restrictive than original method(can be less restrictive).

method overriding Example 2



package com.protutorial.plus;
 
public class Overridingexample {
 
	public static void main(String args[]) {
		Company a = new Company(); // object
		Company b = new Flipkart(); //  object
 
		a.address();// runs the method
		b.address();// Runs the method
	}
}
 
class Company {
 
	public void address() {
		System.out.println(" company Address");
	}
}
 
class Flipcart extends Company {
 
	public void address() {
		System.out.println("flipkart Address...");
	}
}