public static int isDecimal(String str) {
        if (str == null || str.isEmpty()) {
            return -1;
        }
        return str.matches("-?\\d+(\\.\\d+)?") ? DEC_RADIX : -1;
    }
@Test
    public void isDecimal_Test() {
        Assertions.assertEquals(10, TbUtils.isDecimal("4567039"));
        Assertions.assertEquals(-1, TbUtils.isDecimal("C100110"));
    }