Java BigDecimal calculate compound interest
import java.math.BigDecimal; import java.text.NumberFormat; public class Main { public static void main(String args[]) {// w ww . ja va 2s. com // initial principal amount before interest BigDecimal principal = BigDecimal.valueOf(1000.0); BigDecimal rate = BigDecimal.valueOf(0.05); // interest rate // display headers System.out.printf("%s%20s%n", "Year", "Amount on deposit"); // calculate amount on deposit for each of ten years for (int year = 1; year <= 10; year++) { // calculate new amount for specified year BigDecimal amount = principal.multiply(rate.add(BigDecimal.ONE).pow(year)); // display the year and the amount System.out.printf("%4d%20s%n", year, NumberFormat.getCurrencyInstance().format(amount)); } } }