android 字符串拼接

  String transport = listjs.getString("transport");                                String spStr[] = transport.split(";");/** * 0：飞机,1：火车，2：轮船，3：汽车 * **/                          String transportstr  = null;                                StringBuilder sb = new StringBuilder();                                if(spStr!=null){                                    for(int i = 0;i<spStr.length;i++){                                         switch (spStr[i]){                                             case "0" :                                                 sb.append("飞机 ");//                                                 transportstr = String.format("飞机");                                                 break;                                             case "1":                                                 sb.append("火车 ");//                                                 transportstr = String.format("火车");                                                 break;                                             case "2":                                                 sb.append("轮船 ");//                                                 transportstr = String.format("轮船");                                                 break;                                             case "3":                                                 sb.append("汽车 ");//                                                 transportstr = String.format("汽车");                                                 break;                                         }                                    }                                }                                Log.e("字符串拼接",sb.toString());