java List轉換為字符串並加入分隔符的一些方法總結

方法一：

    public String listToString(List list, char separator) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append(list.get(i)).append(separator); } return sb.toString().substring(0, sb.toString().length() - 1); }

方法二：

    public String listToString(List list, char separator) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { if (i == list.size() - 1) { sb.append(list.get(i)); } else { sb.append(list.get(i)); sb.append(separator); } } return sb.toString(); }

方法三：

    public String listToString(List list, char separator) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append(list.get(i)); if (i < list.size() - 1) { sb.append(separator); } } return sb.toString(); }

方法四：

public String listToString(List<String> list, Separator separator) { StringBuilder sb = new StringBuilder(); for (String s : list) { if (s != null && !"".equals(s)) { sb.append(separator.get()).append(s); } } return sb.toString(); }

方法五：

   public String listToString(List list, char separator) { return org.apache.commons.lang.StringUtils.join(list.toArray(), separator); }