EXAMPLE OF INTERFACE (JAVA)

 interface Bank{  

float rateOfInterest();  

}  

class SBI implements Bank{  

public float rateOfInterest(){return 9.15f;}  

}  

class PNB implements Bank{  

public float rateOfInterest(){return 9.7f;}  

}  

class TestInterface2{  

public static void main(String[] args){  

Bank b=new SBI();  

System.out.println("ROI: "+b.rateOfInterest());  

}}