Chapter 6.1, Problem 2SC

Explanation of Solution

Modified Program:

//Definition of class "Investment"

public class Investment

{

    //Declaring private variables

    private double balance;

    private double rate;

    private int year;

    //Declaring an Investment object

    public investment(double aBalance,double aRate)

    {

        balance = aBalance;

        rate = aRate;

        year = 0;

    }

//keeps accumulating interest until a target has been reached

    public void waitForBalance(double targetBalance)

    {

//while loop executes if balance is less than targetBalance

        while(balance < targetBalance)

        {

            //increment year

            year++;

            //Declaring variable interest

            double interest = balance * rate / 100;

            //Defining variable balance

            balance = balance + interest;

        }

    }

    //To get the current investment balance

...