SimpleCalc.java

public class GenericSimpleCalcFactoryFactory {
        class SimpleCalcFactory {
                class SimpleCalc {
                        double number = Integer.parseInt(args[0]);

                        if (number < 0){
                                System.out.println(Math.pow(number,  2) + (number/2));
                                return;
                        }

                        // Number is greater than zero
                        if ((number % 2 == 0)){ //even
                                System.out.println(Math.pow(number, 3) * (number - 1));
                        } else { //odd
                                System.out.println(Math.pow(number, -1) + (3 * number));
                        }
                }
                
                public SimpleCalc getSimpleCalc() {
                        return new SimpleCalc();
                }
        }
        
        public SimpleCalcFactory getSimpleCalcFactory() {
                return new SimpleCalcFactory();
        }
}

public class SimpleCalcRunner {
        public static void main(String[] args){
                double number = Integer.parseInt(args[0]);
                SimpleCalc calc = GenericSimpleCalcFactoryFactory.getSimpleCalcFactory().getSimpleCalc();
                calc.calculate(number);
                
                return;
        }
}

I am revisiting this with a big smile on my face, ahahaha