Java - Coding Challenge - Classes; Simple Calculator

gistfile1.txt

public class SimpleCalculator {

        private double firstNumber;
        private double secondNumber;

        public double getFirstNumber(){
            return firstNumber;
        }
        public double getSecondNumber(){
            return secondNumber;
        }

        public void setFirstNumber(double firstNumber){
            this.firstNumber=firstNumber;
        }
        public void setSecondNumber(double secondNumber){
            this.secondNumber=secondNumber;
        }

        public double getAdditionResult(){
            return (firstNumber+secondNumber);
        }
        public double getSubtractionResult(){
            return (firstNumber-secondNumber);
        }
        public double getMultiplicationResult(){
            return (firstNumber*secondNumber);
        }
        public double getDivisionResult(){
            if (secondNumber==0){
                return 0;
            } else {
                return (firstNumber/secondNumber);
            }
        }

}