[hardwired]

Code:

        System.out.println(" enter amount invest:");
        investmentAmount = input.nextDouble();
//        investmentAmount = Double.parseDouble(input.nextLine());

        System.out.println(" enter monthly Rate ");
        if(input.hasNextInt())
            interestRate = input.nextDouble()/100.0;
        else
            interestRate = input.nextDouble();
/*
        // Using nextLine here required it be used for investmentAmount.
        String line = input.nextLine();
        interestRate = Double.parseDouble(line);
        if(line.indexOf(".") == -1)
            interestRate /= 100.0;
*/