Interface, could someone help me solving this task. Thank you.

Question

Create an interface called: CustomCalculation

It should have a method called: square

It accepts an integer paremeter

Create another class called: ExecutorC

It should implement CustomCalculation interface

This class should override square method to provide below implementation:

It accepts an integer paremeter

Returns square of that number

Create an object from the class and call the square method.

Answer 1

// This requires some basic understanding of the interfaces and

// how the classes implementing the interfaces are required to provide the implementations.

// For example, here is the answer to your question.

interface CustomCalculation {

public int square(int x);

}

class ExecutorC implements CustomCalculation {

public int square(int x) {

int area = x * x;

return area;

}

}

public class Wyzant {

public static void main(String[] args) {

ExecutorC ec = new ExecutorC();

int area = ec.square(10);

System.out.println("Area " + area);

int area2 = ec.square(25);

System.out.println("Area " + area2);

}

}