import java.applet.*;
import java.util.*;
public class AppletUrlParams extends Applet {
 Hashtable searchparms;
 public void init() {
  // dump to the console the URL, the search and search values
  //  the URL  http://myserver.com/mypage.html?value1=x&value2=y&value3=z
  //  the search  value1=x&value2=y&value3=z
  //  the values  value1=x
  //              value2=y
  //              value3=z
  //
  // then the values are stored in a Hashtable for easy reference.
  // ex. String name = searchparms.get("value2")
  doit();
  }

 public void doit() {
  int i;
  String completeURL = getDocumentBase().toString();
  System.out.println("Complete URL: " + completeURL);
  i = completeURL.indexOf("?");
  if (i > -1) {
   String searchURL = completeURL.substring(completeURL.indexOf("?") + 1);
   System.out.println("Search URL: " + searchURL);

   StringTokenizer st =
     new StringTokenizer(searchURL, "&");
   while(st.hasMoreTokens()){
    String searchValue=st.nextToken();
    System.out.println("value :" + searchValue);
    }
   initHashtable(searchURL);
   dumpHashtable();
   }
  }

  public void initHashtable(String search) {
   searchparms = new Hashtable();
   StringTokenizer st1 =
     new StringTokenizer(search, "&");
   while(st1.hasMoreTokens()){
     StringTokenizer st2 =
       new StringTokenizer(st1.nextToken(), "=");
     searchparms.put(st2.nextToken(),
          java.net.URLDecoder.decode(st2.nextToken()));
     }
   }

  public void dumpHashtable() {
    Enumeration keys = searchparms.keys();
    System.out.println("--------");
    while( keys.hasMoreElements() ) {
      String s = (String) keys.nextElement();
      System.out.println("key : " + s + " value : " + searchparms.get(s));
      }
    System.out.println("--------");
    }
}

key : firsparam value : Hello
key : secondparam value : World
key : thirdparam value : Hello World