如何把一段逗号分割的字符串转换成一个数组？

public static void main(String[] args) {
   String str = "abc,de,f,ghij,klmnopq";
   String[] result = str.split(",");
   for (int i = 0; i < result.length; i++) {
      System.out.println(result[i]);
   }
}

abc
de
f
ghij
klmnopq

public static void main(String[] args) {
   String str = "abc,de,f,ghij,klmnopq";
   StringTokenizer tokener = new StringTokenizer(str, ",");
   String[] result = new String[tokener.countTokens()];
   int i = 0;
   while(tokener.hasMoreElements()){
      result[i++] = tokener.nextToken();
   }
   for(int j = 0;j<result.length;j++){
     System.out.println(result[j]);
   }
}

abc
de
f
ghij
klmnopq