/**
* This class implements a simple program that will compute
* the amount of interest that is earned on an investment over
* a period of one year. The initial amount of the investment
* and the interest rate are input by the user. The value of
* the investment at the end of the year is output. The
* rate must be input as a decimal, not a percentage (for
* example, 0.05 rather than 5).
*
* This program requires TextIO for input. TextIO is not a
* standard part of Java, so it must be made available when
* the program is compiled or run.
*/
public class Interest2 {
public static void main(String[] args) {
double principal; // The value of the investment.
double rate; // The annual interest rate.
double interest; // The interest earned during the year.
System.out.print("Enter the initial investment: ");
principal = TextIO.getlnDouble();
System.out.print("Enter the annual interest rate (as a decimal): ");
rate = TextIO.getlnDouble();
interest = principal * rate; // Compute this year's interest.
principal = principal + interest; // Add it to principal.
System.out.printf("The amount of interest is $%1.2f%n", interest);
System.out.printf("The value after one year is $%1.2f%n", principal);
} // end of main()
} // end of class Interest2