/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author ameed.khalid
*/
/* //Main class
public class MainClass {
public static void main(String[] args)
{
NumberCalculator calc = new NumberCalculator();
System.out.println("Test Addition: " + calc.add(12, 23));
System.out.println("Test Subtraction: " + calc.subtract(42.5,
23.0));
System.out.println("Test Multiplcation: " + calc.multiply(2,
3.0));
System.out.println("Test Division: " + calc.divide(32, 8));
}
}
*/
public abstract class GenericNumberCalculator <E> {
abstract public E add(E num1, E num2);
abstract public E subtract(E num1, E num2);
abstract public E multiply(E num1, E num2);
abstract public E divide(E num1, E num2);
}
class NumberCalculator extends GenericNumberCalculator <Number>
{
public Number add(Number num1, Number num2)
{
return (num1.doubleValue() + num2.doubleValue());
}
public Number subtract(Number num1, Number num2)
{
return (num1.doubleValue() - num2.doubleValue());
}
public Number multiply(Number num1, Number num2)
{
return (num1.doubleValue() * num2.doubleValue());
}
public Number divide(Number num1, Number num2)
{
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