This class implements a simple program that will compute the amount of interest that is earned on an investment over a period of 5 years. The initial amount of the investment and the interest rate are input by the user. The value of the investment at the end of each year is output.

 

/**
 *  This class implements a simple program that will compute the amount of
 *  interest that is earned on an investment over a period of 5 years.  The
 *  initial amount of the investment and the interest rate are input by the
 *  user.  The value of the investment at the end of each year is output.
 */

import java.util.Scanner;
public class BSIT
{
    public static void main(String[] args)
    {
        Scanner readme = new Scanner(System.in);

        double principal;  // The value of the investment.
        double rate;       // The annual interest rate.

        /* Get the initial investment and interest rate from the user. */

        System.out.print("Enter the initial investment: ");
        principal = readme.nextDouble();

        System.out.println("Enter the annual interest rate.");
        rate = readme.nextDouble();


        /* Simulate the investment for 5 years. */

        int years;  // Counts the number of years that have passed.

        years = 0;

        while (years < 5)
        {
            double interest;  // Interest for this year.
            interest = principal * rate;
            principal = principal + interest;     // Add it to principal.
            years = years + 1;    // Count the current year.
            System.out.print("The value of the investment after ");
            System.out.print(years);
            System.out.print(" years is $");
            //%1.2f says to print a floating-point number
            System.out.printf("%1.2f", principal);
            System.out.println();
        } // end of while loop

    }

}