Amount Investment Java

Following Code will calculate the number of years required to get Desired Amount in an Investment 

Code::

import java.util.*;
public class Investment 
{
      public static void main(String[] nt)
      {
          Scanner in=new Scanner(System.in);
          System.out.println("Enter Your Desired Amount");
          int a=in.nextInt();
          System.out.println("Enter Amount to Contribute Every year");
          int b=in.nextInt();
          System.out.println("Enter Rate of Interest in percent");
          int r=in.nextInt();
          int  amount=0,year=0,interest=0;
           while(amount<a)
          { 
              amount=amount+b;
              interest=amount*r/100;
              amount=amount+interest;
              year++;
          }
          System.out.printf("You will get Amount=%d in %d years\n",amount,year);
      }

}

Output: