import java.util.Scanner;
import java.text.*;

public class InvestmentAccount {
   double principal;
   double interest;
   int years;
   
   public InvestmentAccount() {
    Scanner s=new Scanner(System.in);
    System.out.println("Please put in the  account's principal:");
    principal=s.nextDouble();    
    System.out.println("The account's interest:");
    interest=s.nextDouble();
    years=0;
    }
   
   public InvestmentAccount(double p,double i) {
      principal=p;
      interest=i;
      years=0;
   }
   
   public void addYear() {
     double multiplier=1.0+interest;
     principal = principal * multiplier;
     years++;
   }
      
}