字符串逗号隔开输出子字符串

public static void main(String[] args) {
  String a  = "co2,pm2.5,temper";
  String[] stringArray = a.split(",");
  List<String> strings = new ArrayList<String>(Arrays.asList(stringArray));
  strings.remove("temper");
  System.out.println(strings);
  String join = StringUtils.join(strings, ",");
  System.out.println(join);
  
}

运行结果：
[co2, pm2.5]
co2,pm2.5