Examples of java.util.Enumeration

java.util.Enumeration
An object that implements the Enumeration interface generates a series of elements, one at a time. Successive calls to the nextElement method return successive elements of the series.
For example, to print all elements of a Vector<E> v:
```
 for (Enumeration<E> e = v.elements(); e.hasMoreElements();) System.out.println(e.nextElement());
```
Methods are provided to enumerate through the elements of a vector, the keys of a hashtable, and the values in a hashtable. Enumerations are also used to specify the input streams to a SequenceInputStream.
NOTE: The functionality of this interface is duplicated by the Iterator interface. In addition, Iterator adds an optional remove operation, and has shorter method names. New implementations should consider using Iterator in preference to Enumeration. @see java.util.Iterator @see java.io.SequenceInputStream @see java.util.Enumeration#nextElement() @see java.util.Hashtable @see java.util.Hashtable#elements() @see java.util.Hashtable#keys() @see java.util.Vector @see java.util.Vector#elements() @author Lee Boynton @version 1.24, 11/17/05 @since JDK1.0


    // build option string
    result.append("\n");
    result.append(saver.getClass().getName().replaceAll(".*\\.", ""));
    result.append(" options:\n\n");
    Enumeration enm = saver.listOptions();
    while (enm.hasMoreElements()) {
      option = (Option) enm.nextElement();
      result.append(option.synopsis() + "\n");
      result.append(option.description() + "\n");
    }


    return result.toString();

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   * @param o the object to perform some additional processing on
   * @return the processed object
   * @throws Exception if post-processing fails
   */
  protected Object readPostProcess(Object o) throws Exception {
    Enumeration             enm;
    Vector                  deserialized;
    Object                  key;


    deserialized = (Vector) super.readPostProcess(o);
    
    // rebuild the actual connections
    rebuildBeanConnections(deserialized, REGULAR_CONNECTION);


    // rebuild the references in the MetaBeans
    enm = m_BeanConnectionRelation.keys();
    while (enm.hasMoreElements()) {
      key = enm.nextElement();
      
      // skip the regular connections
      if (!(key instanceof MetaBean))
        continue;

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    ArrayList<String> values = new ArrayList<String>(tempHash.size());
    // add dummy objects in order to make the ArrayList's size == capacity
    for (int z = 0; z < tempHash.size(); z++) {
      values.add("dummy");
    }
    Enumeration e = tempHash.keys();
    while (e.hasMoreElements()) {
      Object ob = e.nextElement();
      //    if (ob instanceof Double) {
      int index = ((Integer)tempHash.get(ob)).intValue();
      String s = ob.toString();
      if (s.startsWith("'") || s.startsWith("\""))
        s = s.substring(1, s.length() - 1);

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    result.addElement(new Option(
        "\tThe string representing a missing value.\n"
        + "\t(default: ?)",
        "M", 1, "-M <str>"));
    
    Enumeration en = super.listOptions();
    while (en.hasMoreElements())
      result.addElement((Option)en.nextElement());
      
    return result.elements();
  }

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    }
    result.append(">\n");


    if (loader instanceof OptionHandler) {
      result.append("\nOptions:\n\n");
      Enumeration enm = ((OptionHandler) loader).listOptions();
      while (enm.hasMoreElements()) {
  option = (Option) enm.nextElement();
  result.append(option.synopsis() + "\n");
  result.append(option.description() + "\n");
      }
    }

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   * @param not   the notification to send.
   */
  protected final void
  sendTo(RoleMultiple role, Notification not) {
    if (role == null) return;
    Enumeration to = role.getListeners();
    if (to == null)
      return;
    while (to.hasMoreElements())
      sendTo((AgentId) to.nextElement(), not);
  }

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    } // end for (int i=0; i<totalnumberofrows; i++)
  
    returnmap.put("calendarlist", calendarlist);
    // get the unscheduledactivities and scheduledactivities and shove them onto
    // the return.
    Enumeration unsheduledenum = unscheduledactivity.elements();
    while (unsheduledenum.hasMoreElements()) {
      CalendarActivityObject activityobject = (CalendarActivityObject)unsheduledenum.nextElement();
      unsheduledMap.put(activityobject.getActivityID(), activityobject);
    }
  
    Enumeration scheduledenum = scheduledactivitydaily.elements();
    while (scheduledenum.hasMoreElements()) {
      CalendarActivityObject activityobject = (CalendarActivityObject)scheduledenum.nextElement();
      scheduledMap.put(activityobject.getActivityID(), activityobject);
    }
  
    returnmap.put("unscheduledactivity", unsheduledMap);
    returnmap.put("scheduledactivity", scheduledMap);

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        String file = null;
        try {


            // loop through all initialization parameter pairs
            HashMap map = new HashMap();
            Enumeration pnum = servlet.getInitParameterNames();
            ServletContext serv = servlet.getServletContext();
            while (pnum.hasMoreElements()) {


                // parameter name is path and value is service definition file
                path = (String) pnum.nextElement();
                file = "/WEB-INF/" + servlet.getInitParameter(path);
                InputStream is = null;
                try {
                    is = serv.getResourceAsStream(file);
                    if (is == null) {

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      String accountType = accountVO.getAccountType();
      emailListForm.set("accountType", accountType);


      // This approach dirties the session, try to clean it up a bit.
      Enumeration nameEnum = session.getAttributeNames();
      while (nameEnum.hasMoreElements()) {
        String element = (String)nameEnum.nextElement();
        Object o = session.getAttribute(element);
        if (o instanceof BackgroundMailCheck) {
          if (!((BackgroundMailCheck)o).isAlive()) {
            session.removeAttribute("element");
          }

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        // get user id
        Integer user = (Integer)allUsers.next();
        Vector activityObjects = (Vector)userActivities.get(user);
        AvailableList avlList = (AvailableList)userIdNames.get(user);
        boolean activityArray[] = avlList.getAvailable();
        Enumeration activityEnum = activityObjects.elements();


        while (activityEnum.hasMoreElements()) {
          CalendarActivityObject activityobject = (CalendarActivityObject)activityEnum
              .nextElement();


          GregorianCalendar starttime = activityobject.getStartTime();
          GregorianCalendar endtime = activityobject.getEndTime();

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