I’m not 100% sure what you are trying to achive. But assuming you are trying to do some sort of compounding interest. This should help.
public static void main(String[] args)
{
double startAmount = 1000;
double ratePercentage = 0.05;
double newAmount;
newAmount = startAmount;
for (int i = 0; i <= 10; i++){
newAmount = newAmount + (newAmount * ratePercentage);
System.out.println(i + " " + newAmount);
}
}