/**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        //Create the variable
        double[][] businesses = new double[10][];

        Scanner in = new Scanner(System.in);

        boolean yes = true;
        int numYears;

        double initInvestment;
        double profitMargin;
        double fixedExp;
        double variableExp;

        System.out.println("Please enter the number of years for the financial analysis? ");
        numYears = in.nextInt();

        System.out.println("Please enter the initial investment capital? ");
        initInvestment = in.nextDouble();

        //start while
        int i = 0;

        while (yes) {
            double[] eachBusiness = new double[3];
            System.out.println("Please enter the profit margin (%) for business# " + i);
            profitMargin = in.nextDouble();
            eachBusiness[0] = profitMargin;

            System.out.println("Please enter the annual fixed expenses for business# " + i);
            fixedExp = in.nextDouble();
            eachBusiness[1] = fixedExp;

            System.out.println("Please enter the annual variable expenses for business# " + i);
            variableExp = in.nextDouble();
            eachBusiness[2] = variableExp;

            System.out.println("Do you want to process more businesses? true/false");
            yes = in.nextBoolean();

            businesses[i] = eachBusiness;

            i++;
        }//end-while

        //show results for each business and store all their profits
        double profits[] = new double[10];
        for (int j = 0; j < i; j++) {
            profits[j] = calculate(numYears, j, initInvestment,
                    businesses[j][0], businesses[j][1], businesses[j][2]);
        }

        System.out.println("---------------------------------");

        //find most profitable business
        int mostProfits = 0;
        double profit = 0.0;
        for (int j = 0; j < i; j++) {
            if (profits[j] > profit) {
                profit = profits[j];
                mostProfits = j;
            }//end-if
        }//end-for

        //Display the result
        System.out.println("* most profitable business is number: "
                + mostProfits + ", with overall profit= "
                + String.format("%.2f", profit - initInvestment));

        //calculate when it will reach 100% ROI
        double ROI = findROI(initInvestment, businesses[mostProfits][0],
                businesses[mostProfits][1], businesses[mostProfits][2]);
        System.out.println("* It will achieve/exceed 100% ROI in year:("
                + String.format("%.0f", ROI) + "), with a total ending "
                + "balance at the end of year(" + (numYears - 1)
                + ") = " + String.format("%.2f", profit));

    }

    //find the the max profit business#
    public static double calculate(int years, int i,
            double starting_balance, double profit_margin,
            double fixed_expenses, double variable_expenses) {

        double originalInvestment = starting_balance;

        int year;
        double endBalance = 0.0;
        double ROI;
        double net_profit;
        double gross_profit;
        double all_expenses;

        System.out.println("--------------------");
        System.out.println("Currently analysing business# " + i);
        System.out.println("--------------------");

        for (year = 0; year < years; year++) {

            gross_profit = starting_balance * profit_margin;

            all_expenses = starting_balance * variable_expenses + fixed_expenses;

            net_profit = gross_profit - all_expenses;

            endBalance = starting_balance + net_profit;

            System.out.println("year:" + year + " analysis");
            System.out.println("grossProfit: " + String.format("%.2f", gross_profit));
            System.out.println("netProfit: " + String.format("%.2f", net_profit));
            System.out.println("endBalance: " + String.format("%.2f", endBalance));

            starting_balance = endBalance;

        }//end-for
        return endBalance;

    }//end max profits

    //find yearROI
    public static double findROI(double starting_balance,
            double profit_margin, double fixed_expenses,
            double variable_expenses) {

        double originalInvestment = starting_balance;
        double endBalance = 0.0;
        double ROI = 0.0;
        double net_profit;
        double gross_profit;
        double all_expenses;

        int yearROI = 0;

        while (ROI < 1.00) {

            gross_profit = starting_balance * profit_margin;

            all_expenses = starting_balance * variable_expenses + fixed_expenses;

            net_profit = gross_profit - all_expenses;

            endBalance = starting_balance + net_profit;

            ROI = (endBalance - originalInvestment) / originalInvestment;

            starting_balance = endBalance;

            yearROI++;
        }//end-while
        return yearROI-1;
    }//end find yearROI
}