import java.util.*;
public class TokenApp {
   static String  str="this is a test";

   public static void main(String[] args) {
     int num;

     StringTokenizer st = new  StringTokenizer(str);
     num=st.countTokens() ;
     System.out.println(num+" tokens");

     while(st.hasMoreTokens())
        System.out.println(" " +st.nextToken());
   }
}

運行結果：
4 tokens 
this
is
a
test