等额本金还款法java实现

以下是Java实现等额本金还款法的代码：

import java.math.BigDecimal;

public class AverageCapital {
    public static void main(String[] args) {
        BigDecimal totalLoan = new BigDecimal(100000); // 贷款总额
        int months = 12; // 贷款期限（月）
        BigDecimal annualInterestRate = new BigDecimal(0.05); // 贷款年利率
        BigDecimal monthlyInterestRate = annualInterestRate.divide(new BigDecimal(12), 6, BigDecimal.ROUND_HALF_UP); // 贷款月利率
        BigDecimal monthRepaymentCapital = totalLoan.divide(new BigDecimal(months), 2, BigDecimal.ROUND_HALF_UP); // 每月偿还本金
        BigDecimal remainingLoan = totalLoan; // 剩余未还本金
        BigDecimal totalInterest = new BigDecimal(0); // 总利息

        for (int i = 1; i <= months; i++) {
            BigDecimal monthInterest = remainingLoan.multiply(monthlyInterestRate).setScale(2, BigDecimal.ROUND_HALF_UP); // 每月偿还利息
            BigDecimal monthRepayment = monthRepaymentCapital.add(monthInterest); // 每月偿还总额
            remainingLoan = remainingLoan.subtract(monthRepaymentCapital); // 剩余未还本金
            totalInterest = totalInterest.add(monthInterest); // 总利息
            System.out.println("第" + i + "个月，偿还本金：" + monthRepaymentCapital + "，偿还利息：" + monthInterest + "，偿还总额：" + monthRepayment + "，剩余未还本金：" + remainingLoan);
        }

        System.out.println("总利息：" + totalInterest);
    }
}