字符串截取操作

1. public static String[] splitStringByComma(String source){
           if(source==null||source.trim().equals(""))
                   return null;
           StringTokenizer commaToker =  new StringTokenizer(source,",");
           String[] result = new String[commaToker.countTokens()];
           while(commaToker.hasMoreTokens()){
                   result = commaToker.nextToken();
           }
           return result;
  }

2. 直接用spilt:

                String[] result = string.split(str,reg);