If you don't care about the keys, use the values() method instead of the
keys() method to get an enumeration of values.

   Are you using Java 1.5 or 1.4 or some other version?

   - Oliver

tuurbo46@yahoo.co.uk wrote in news:1138125463.066937.5490
@f14g2000cwb.googlegroups.com:

userName is a TextField, so why are you casting the retrieved element to
String?  What's TextField anyway?  java.awt.TextField has no constructor
that matches what you're using.

Using Hashtable is easy, you just have to make sure that what you put in
matches what you're trying to get out.  You can't put in an Acorn and
expect to get an Oak back.

Hashtable table = new Hashtable();
table.put("1", new Integer(1));
table.put("2", new Integer(2));

for (Enumeration e = table.keys(); e.hasMoreElements(); )
{
  String key = e.nextElement();
  Integer value = (Integer)table.get(key);
  System.out.println(key " => " value);
}

see http://mindprod.com/jgloss/hashtable.html
and http://mindprod.comj/jgloss/hashmap.html
which is the modern replacement.

for sample code.

Hi

Currently im doing some uni homework and we have to modify a mobile
phone application.  This involves starting with a blank phone, and
adding the following items:

add entry
delete entry
view
search

So far i am able to get the main screen going (as above).  With this
working i can select the add entry - this works fine.  At this point i
add name and telephone number and this gets saved to a hashtable.  At
this point i struggle because i cannot get data from hashtable to view
names and telephone numbers.  Below is the list of my code snippets

//Declared at top of source code
 private TextField userName = new
TextField("Name:.","",20,TextField.ANY);
 private TextField userNumber = new
TextField("Number:.","",20,TextField.ANY);

//Hashtable
 Hashtable hT = new Hashtable(10);

// adding people to hashtable

else if(event.equals("Save"))

         {

         hT.put(userName.getString(),userNumber.getString());

         MainMenu();

         }

// viewing people in hashtable - this does not work

 public void View()

   {

   Enumeration e1=hT.keys();

   while(e1.hasMoreElements())

   {

    userName = (String)e1.nextElement();

    userNumber=(String)hT.get(userName);

    display.setCurrent(userNumber);

     }

//Fields for entering name and number

 public void textBox()

   {

   display = Display.getDisplay(this);

   Form f = new Form("Add:");

   f.append(userName);

   f.append(userNumber);

   f.addCommand(backCommand);

   f.addCommand(SaveCommand);

   f.setCommandListener(this);

   display.setCurrent(f);

   }

}

Thanks guys.