java 拼接字符串时，去掉最后一个多余的逗号

for (int t = 0; t < memberLen; t++) {
      memTemp =  stafferMap.get(strMember[t]);
      if(memTemp != null){
       memberNames += memTemp + ",";
      }
     }

以上的代码，拼接的字符串会多一个“，”,比如："str1,str2,str3,"，要去除str3后的逗号，可用如下方法：
     
     memberNames = memberNames.substring(0,memberNames.length()-1);

 

比如当Team1=test   ", "U1-Team   ", "V-Team   ", "时

如何改成:

Team1= "test   ", "U1-Team   ", "V-Team   "

可用：

Team1   =   " " "   +   Team1.Substring(0,   Team1.Length   -   2);