dateStr);
//转换为列表
String[] strArr = {"a", "b", "c", "d"};
List strList = Convert.toList(String.class...(n1, n2);
//保留两位小数
BigDecimal roundNum = NumberUtil.round(n1, 2);
String n3 = "1.234";
//判断是否为数字、整数、浮点数...//数组转换为列表
String[] array = new String[]{"a", "b", "c", "d", "e"};
List list = CollUtil.newArrayList...(array);
//join：数组转字符串时添加连接符号
String joinStr = CollUtil.join(list, ",");
LOGGER.info("collUtil join:{...}", joinStr);
//将以连接符号分隔的字符串再转换为列表
List splitList = StrUtil.split(joinStr, ',');
LOGGER.info(
