Runtime Polymorphism in Java-2

Runtime Polymorphism in Java-2

Real example of Java Runtime Polymorphism

Consider a scenario, Bank is a class that provides method to get the rate of interest. But, rate of interest
may differ according to banks. For example, SBI, ICICI and AXIS banks could provide 8%, 7% and
9% rate of interest.

Note: It is also given in method overriding but there was no upcasting.

    class Bank{ 
    int getRateOfInterest(){return 0;} 
    } 
     
    class SBI extends Bank{ 
    int getRateOfInterest(){return 8;} 
    } 
     
    class ICICI extends Bank{ 
    int getRateOfInterest(){return 7;} 
    } 
    class AXIS extends Bank{ 
    int getRateOfInterest(){return 9;} 
    } 
     
    class Test{ 
    public static void main(String args[]){ 
    Bank b1=new SBI(); 
    Bank b2=new ICICI(); 
    Bank b3=new AXIS(); 
    System.out.println("SBI Rate of Interest: "+b1.getRateOfInterest()); 
    System.out.println("ICICI Rate of Interest: "+b2.getRateOfInterest()); 
    System.out.println("AXIS Rate of Interest: "+b3.getRateOfInterest()); 
    } 
    } 

Output:
SBI Rate of Interest: 8
ICICI Rate of Interest: 7
AXIS Rate of Interest: 9