You didn't find a nit, you just didn't read carefully enough. What I said
was "You can however reuse the same enumeration variable" which is the same
thing you said.
(*Chris*)
----- Original Message -----
From: Lance Lavandowska <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, September 21, 1999 6:46 PM
Subject: Re: Enumeration for http parameters
> >loop. You can however reuse the same enumeration variable like this:
> >Enumeration enum = request.getParameterNames();
> ><snip>
> >
> >while(enum.hasMoreElements()) {
> <snip>
> >}
> >enum = request.getParameterNames();
>
> Just to pick a nit, you are not reusing the same enumeration, rather
> you setting the same variable ("enum") to contain the same value
("request.getParameterNames()"). While effectively the same, these are
different, and I have long wished that one could "rewind" an enumeration:
> while(enum.hasMoreElements()) {
> <snip>
> }
> enum.rewindToBeginning(); // a long winded method name
>
> so I wouldn't have to reset the value of the enumeration...
>
> Sorry, you just hit a sore spot of mine,
>
> Lance
>
> -----Original Message-----
> From: Chris Pratt <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Date: Tuesday, September 21, 1999 8:30 PM
> Subject: Re: Enumeration for http parameters
>
>
> >An enumeration allows you to run through a collection of objects. Once
> >you've reached the end, it does not go back to the top. If it did, you
> >wouldn't know when you reached the end and you'd have yourself an endless
> >loop. You can however reuse the same enumeration variable like this:
> >
> >String name;
> >String value;
> >Enumeration enum = request.getParameterNames();
> >Hashtable hash = new Hashtable();
> >
> ><snip>
> >
> >while(enum.hasMoreElements()) {
> > name = (String)enum.nextElement();
> > value = request.getParameter(name);
> > hash.put(name, value);
> > System.out.println(hash.get(name));
> >}
> >enum = request.getParameterNames();
> >while(enum.hasMoreElements()) {
> > name = (String)enum.nextElement();
> > value = (String)hash.get(name);
> > System.out.println(value);
> > msg.println(name + ": " + value);
> >}
> >
> > (*Chris*)
> >
> >----- Original Message -----
> >From: Message UK <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Tuesday, September 21, 1999 5:34 AM
> >Subject: Enumeration for http parameters
> >
> >
> >> Hello all. I have an email servlet which processes a form. I use an
> >> Enumeration to get the parameter names, the values of which I then put
> >into
> >> a hashtable (don't ask). When I get the values out again to output, I
find
> >I
> >> have to use a second Enumeration to get the parameter names. If I
don't,
> >> nothing is retrieved from my hastable. Does the Enumeration object
"empty"
> >> as the elements in it are retrieved? Thanks so much.
> >>
> >> Enumeration enum = request.getParameterNames();
> >> Enumeration enum2 = request.getParameterNames();
> >>
> >>
> >> file://we'll store the submitted parameters here
> >> Hashtable hash = new Hashtable();
> >>
> >> <snip>
> >>
> >> while(enum.hasMoreElements())
> >> {
> >>
> >> String name = (String)enum.nextElement();
> >> String value = request.getParameter(name);
> >>
> >> hash.put(name, value);
> >>
> >> System.out.println(hash.get(name));
> >>
> >> }
> >>
> >>
> >> <snip>
> >>
> >> while (enum2.hasMoreElements())
> >> {
> >> String name = (String)enum2.nextElement();
> >> System.out.println((String)hash.get(name));
> >>
> >> msg.println(name + ": " + (String)hash.get(name));
> >> }
> >>
> >>
> >>
> >> D Lampon
> >>
> >> ______________________________________________________
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> >>
> >>
>
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