java stringtokenizer如何处理URL编码

StringTokenizer ??????? URL ????????,????? java.net.URLDecoder ???? URL ?????????????????,?????? StringTokenizer ?? URL ????????,???????:

import java.net.URLDecoder;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        String urlEncodedString = "Hello, World! ??!"; // URL ??????
        String decodedString = URLDecoder.decode(urlEncodedString, "UTF-8"); // ?? URL ??????

        StringTokenizer tokenizer = new StringTokenizer(decodedString); // ??????????? StringTokenizer
        while (tokenizer.hasMoreTokens()) {
            System.out.println(tokenizer.nextToken());
        }
    }
}

??????,?????? URLDecoder.decode() ??? URL ??????????????????,??????????????? StringTokenizer ??,???????