Java等额本息年化利率 转等本等息月利率

public static void main(String[] args) {double interest = 0.237;//年化利率int period = 18;//期数BigDecimal periodB = BigDecimal.valueOf(period);BigDecimal monthRepay = BigDecimal.valueOf(Finance.pmt(interest / 12,period , -1)).multiply(periodB).subtract(BigDecimal.ONE).setScale(4,BigDecimal.ROUND_HALF_UP);BigDecimal monthRate = monthRepay.divide(periodB,4, BigDecimal.ROUND_HALF_UP);System.out.println(monthRate);}