package interfaceExamples; class Aa implements Bb { public int methodB(int i) { return i =+ i * i; //i = ((+ i) * i) } } abstract interface fgf{ } interface Bb { int methodB(int i); } public class practice2 { public static void main(String[] args) { Bb b = new Aa(); System.out.println(b.methodB(2)); } }