Problem with Calculation ....

[danny000]

i need to calculate :

interest earned = invesment value (current) * (interest rate / 100)
invesment value (new) = invesment value (current) + interest earned

how do i write in a java program ?

is it ,

Code:

import java.util.scanner;
public class invesment
{
  public static void main (String [] args)
  {

    double intEarned = a;
    double inteValue = b;
    double newInves = c;
   
    Scanner keyboard = new Scanner(System.in);
   
    // this where we input the value
    System.out.print("Enter your Invesment Value:");
    b = keyboard.nextDouble();
    
    int i = 0;
    while (i < 5 )
     { 
        a = b * (10/100)
        c = b + a
         
        i = i + 1;
      }

 and so on.

my result must be like this :

year interest Earned Investment Value
---- --------------- -----------------
1 $10.00 $110.00
2 $11.00 $121.00
3 $12.10 $133.10
4 $13.31 $146.41
5 $14.64 $161.05

* how do i loop it ?
* is my calculation is correct ?

Thanks!

[Chris.Brown.SPE]

I'll be amazed if you are still looking for the answer to this problem. Hope this helps.

Code:

import java.util.*;

public class investment {

  public static void main(String[] args) {

    double intEarned;// just use these for your variables, no a/b/c needed
    double inteValue;//you dont need newInves, just change inteValue.
    double interestRate = 10;// interest rate as variable so it is easier to
                              // change
    int years = 5;// make the years an easily changed variable
    Scanner keyboard = new Scanner(System.in);

    // this where we input the value
    System.out.print("Enter your Invesment Value:");
    inteValue = keyboard.nextDouble();
    System.out.println("year interest Earned Investment Value");
    System.out.println("---- --------------- -----------------");
    for (int i = 0; i < years; i++) {// for loop controls the counter for you so you dont have to worry about it
      intEarned = inteValue * (interestRate / 100);
      inteValue = inteValue + intEarned;
      System.out.print((i + 1));
      System.out.printf(" $%.2f", intEarned);// formated output for 2 decimal places
      System.out.printf(" $%.2f%n", inteValue);
    }

  }
}