Overriding

Example of Overriding in java

// Base Class class Parent { void show() { System.out.println("Parent's show()"); } } // Inherited class class Child extends Parent { // This method overrides show() of Parent @Override void show() { System.out.println("Child's show()"); } }

What is method overriding in Java?

Declaring a method in sub class which is already present in parent class is known as method overriding. Overriding is done so that a child class can give its own implementation to a method which is already provided by the parent class.

In what languages is overriding useful?

In any object-oriented programming language

What are the restrictions when overriding a method?

It must have the same method name. It must have the same arguments. It must have the same return type. ... It must not have a more restrictive access modifier (if parent --> protected then child --> private is not allowed). It must not throw new or broader checked exceptions.

Can we override private method in Java?

No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.

Can we override static method?

No, you can't override the static method because they are the part of class not object.

What is the difference between overriding and overloading?

Overloading occurs when two or more methods in one class have the same method name but different parameters. Overriding occurs when two methods have the same method name and parameters. One of the methods is in the parent class, and the other is in the child class.

What is the main use of method overriding in Java?

The ability to define a behavior that's specific to the subclass type, which means a subclass can implement a parent class method based on its requirement.

Overriding

a feature that allows a subclass or child class to provide a specific implementation of a method that is already provided by one of its super-classes or parent classes

Example of method overriding in java

class Human{ //Overridden method public void eat() { System.out.println("Human is eating"); } } class Boy extends Human{ //Overriding method public void eat(){ System.out.println("Boy is eating"); } public static void main( String args[]) { Boy obj = new Boy(); //This will call the child class version of eat() obj.eat(); } }