从给定范围生成随机BigDecimal值

class BigDecRand {    public static void main(String[] args) {        String range = args[0];        BigDecimal max = new BigDecimal(range + ".0");        BigDecimal randFromDouble = new BigDecimal(Math.random());        BigDecimal actualRandomDec = randFromDouble.divide(max,BigDecimal.ROUND_DOWN);        BigInteger actualRandom = actualRandomDec.toBigInteger();    }}