Hola:
Si miras la api de StringTokenizer
http://docs.oracle.com/javase/7/docs...Tokenizer.html verás
Cita: StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. It is recommended that anyone seeking this functionality use the split method of String or the java.util.regex package instead.
Es decir, se recomienda el uso de split. StringTokenizer es una clase antigua que se mantiene por compatibilidad.
Se bueno.