Everything is Ok.My problem is  solved fromEmexes'scode and Aeric'scode. Let me explain my problem. There  are 2 points 
of problem. Magret's code, there isn't Split2 and return array of string(her code has only split  which return list. so B4A told that itcan't found StringBuilder.jar   and another Point, Aeric's  example about"\."  which is different  from VB6.0 coding. The helping of  Emexe's code, it can be solved the problem.