Wednesday, 11 April 2018

Method Overriding


  • If subclass (child class) has the same method as declared in the parent class, it is known as method overriding in java.
Usage:-
  • Method overriding is used to provide specific implementation of a method that is already provided by its super class.
  • Method overriding is used for runtime polymorphism
    Rules for Java Method Overriding:-
  • method must have same name as in the parent class
  • method must have same parameter as in the parent class.
  • must be IS-A relationship (inheritance).
    Example:
class Vehicle
{
void run()
{
System.out.println(“Vehicle is running”);
}
}
class Bike2 extends Vehicle
{
void run()
{
System.out.println(“Bike is running safely”);   //Method Overriding
}
public static void main(String args[])
{
Bike2 obj = new Bike2();
obj.run();
}

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