"//Java Program to demonstrate why we need method overriding  
//Here, we are calling the method of parent class with child  
//class object.  
//Creating a parent class  
class Vehicle{  
  void run(){System.out.println("Vehicle is running");}  
}  
//Creating a child class  
class Bike extends Vehicle{  
  public static void main(String args[]){  
  //creating an instance of child class  
  Bike obj = new Bike();  
  //calling the method with child class instance  
  obj.run();  
  }  
}  

"//Java Program to illustrate the use of Java Method Overriding  
//Creating a parent class.  
class Vehicle{  
  //defining a method  
  void run(){System.out.println("Vehicle is running");}  
}  
//Creating a child class  
class Bike2 extends Vehicle{  
  //defining the same method as in the parent class  
  void run(){System.out.println("Bike is running safely");}  
    public static void main(String args[]){  
  Bike2 obj = new Bike2();//creating object  
  obj.run();//calling method  
  }  
}  

"//Java Program to demonstrate the real scenario of Java Method Overriding  
//where three classes are overriding the method of a parent class.  
//Creating a parent class.  
class Bank{  
int getRateOfInterest(){return 0;}  
}  
//Creating child classes.  
class SBI extends Bank{  
int getRateOfInterest(){return 8;}  
}  
  class ICICI extends Bank{  
int getRateOfInterest(){return 7;}  
}  
class AXIS extends Bank{  
int getRateOfInterest(){return 9;}  
}  
//Test class to create objects and call the methods  
class Test2{  
public static void main(String args[]){  
SBI s=new SBI();  
ICICI i=new ICICI();  
AXIS a=new AXIS();  
System.out.println("SBI Rate of Interest: "+s.getRateOfInterest());  
System.out.println("ICICI Rate of Interest: "+i.getRateOfInterest());  
System.out.println("AXIS Rate of Interest: "+a.getRateOfInterest());  
}  
}