我有工作的程序，我只是需要帮助切断额外的数字，我不太善于使用printf语句时，在java打印。当我运行它时，我得到了类似1225.043的输出：

import java.util.Scanner;

public class Comparison {

    public static void main(String[] args) 
    {
        Scanner keyboard = new Scanner(System.in);

        float amount;
        double principal = 1000.00;
        double rate;

        System.out.println("Enter interest rate");
        rate = keyboard.nextDouble();

        System.out.println("Year" +"     "+ "Amount on deposit");

        for(int year = 1; year <= 10; ++year)
        {
            amount = (float) (principal * Math.pow(1.0 + rate, year));

            System.out.println(year+ "       "+ amount);
            System.out.println();
        }
    }
}