Thread: Need help fixing very trivial for loop problem

// conor brennan
// cb3131
// 5/27/14
// this program gives a monthly report of how much the person should be saving/ the balance of their account
 
import java.util.Scanner;
 
public class savingsplan2
{
  public static void main(String args [])
  {
    Scanner kb = new Scanner(System.in);
 
    System.out.println("What is your savings goal in dollars?"); //prompt user
    double goal = kb.nextDouble();
 
    System.out.println("Enter the expected annual rate of return in percent: ");  
      //prompt user
    double monthlyrate = kb.nextDouble() / 1200;
 
    System.out.println("Enter time until goal in years: "); //prompt user
    double time = kb.nextDouble();
 
    double pv = 1 / Math.pow(1 + monthlyrate, time * 12);
    double save = (goal * pv * monthlyrate / ( 1 - pv));
 
    int savedollar = (int)  save; // integer value of how much should be saved    
                                           //per month
    double savecent = (save - savedollar) * 100; // number of cents left over
    int savecent1 = (int)savecent;  // finds integer value of cents left over
    double savetotal = savedollar + (double)savecent1 / 100; // adds integer         
                                                                                   //of dollars and 
                                                                                   // decimal of 
                                                                                  //cents to find 
                                                                                //monthly payment 
                                                                                //to nearest cent
    System.out.println();
    System.out.println("Savings goal: " + goal);
    System.out.println("Annual rate of return: " + monthlyrate * 12 + "%");
    System.out.println("monthly rate: " + monthlyrate + "%");
    System.out.println("Time until goal: " + time + " years");
    System.out.println("to reach this goal, you must save $" + savetotal + " per month");
    System.out.println();
    double interest = 0;
    double balance = 0;
    double totalinterest = 0;
    double finalinterest = 0;
  for (int j = 1; j <= 3; j++){ // prints header for each year long chart
      System.out.println();
      System.out.println("Savings schedule for year " + j);
      System.out.println();
      System.out.println("month   interest     amount        balance");
      System.out.println();
 
 
 
    for (int i = 1; i <= 12; i++) { // prints values in the chart for 3 years
      double amount = savetotal;
      interest = balance * monthlyrate ; // finds monthly interest
      int realinterest = (int)interest;  // gets rid of numbers after decimal
      double realinterest1 = (interest - realinterest) * 100; // gets value after 
                                                                               //decimal
      double actualinterest = (int)realinterest1;  // gets rid of numbers after 
                                                                //decimal
      finalinterest = actualinterest / 100 + realinterest; // finds interest to two 
                                                                          //decimal places
      balance = amount + balance + finalinterest; // accumulates balance
      totalinterest = totalinterest + finalinterest; 
      System.out.print(i);
      System.out.println("        " + finalinterest + "        " + amount + "        " + balance);
 
 
    for (int k = i; k >= 12; k--) { // prints footer at end of each year long 
                                             //chart
      System.out.println();
      System.out.println("Savings summary for year " + j);
      System.out.println("Total amount saved: " + (12 * amount));
      System.out.println("Total interest earned: " + totalinterest);
      System.out.println("End of year balance: " + balance);
      }
      }
    }
  }
}

the program is doing everything I want it to do but one thing. I want it to accumulate the interest earned per year and to print that number. By that I mean that I want the interest for year one to be printed after year one, and then I want the interest to reset to 0. I want the interest earned to be only for one individual year at a time. My program currently accumulates the interest each consecutive year, so by year 3, the printed interest is the accumulation of interest earned in year 1, 2, and 3.

Please post the program's output and add some comments to show what you want changed.

Please fix the indentations and the placement of the }s to show the logic.

Is this the same problem: http://www.java-forums.org/new-java/...ake-momen.html