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Posted to user@struts.apache.org by Stefan Berger <st...@softborg.com> on 2003/08/18 10:58:28 UTC
Form data is not null and the length is 0 --> why this ?
Hi,
I am confused. I have a form with fields and after pressing the button i
got a surprise.
My Form:
String field; and the get/set Methode
When this field is not filled --> the form says the field is not null
but the length is 0 why that ?
Regards Stefan
Re: Form data is not null and the length is 0 --> why this ?
Posted by Jing Zhou <ji...@netspread.com>.
This is the default behaviors of browsers (at least in IE as I know)
Successful controls (the HTML terms for your form fields) will be sent over
with name/value pairs when a form is submitted. So if you get a name,
you must have a value, at least the empty string. There is no *null* concept
in a field's value in HTML. But there is a concept of
successful/non-successful
controls.
Jing
Netspread Carrier
http://www.netspread.com
----- Original Message -----
From: "Stefan Berger" <st...@softborg.com>
To: <st...@jakarta.apache.org>
Sent: Monday, August 18, 2003 3:58 AM
Subject: Form data is not null and the length is 0 --> why this ?
> Hi,
>
> I am confused. I have a form with fields and after pressing the button i
> got a surprise.
>
> My Form:
> String field; and the get/set Methode
>
> When this field is not filled --> the form says the field is not null
> but the length is 0 why that ?
>
> Regards Stefan
>
>
>
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Re: Form data is not null and the length is 0 --> why this ?
Posted by Firat TIRYAKI <fi...@pleksus.com.tr>.
null means the related object has no reference, it has no memory allocation,
and it has no value.
A string may have 0 length but may be referenced in the memory area, so null
doesn't mean 0 length in strings.
F.
----- Original Message -----
From: "Stefan Berger" <st...@softborg.com>
To: <st...@jakarta.apache.org>
Sent: Monday, August 18, 2003 11:58 AM
Subject: Form data is not null and the length is 0 --> why this ?
> Hi,
>
> I am confused. I have a form with fields and after pressing the button i
> got a surprise.
>
> My Form:
> String field; and the get/set Methode
>
> When this field is not filled --> the form says the field is not null
> but the length is 0 why that ?
>
> Regards Stefan
>
>
>
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RE: Form data is not null and the length is 0 --> why this ?
Posted by Andrew Hill <an...@gridnode.com>.
"" != null
-----Original Message-----
From: Stefan Berger [mailto:stefan.berger@softborg.com]
Sent: Monday, 18 August 2003 16:58
To: struts-user@jakarta.apache.org
Subject: Form data is not null and the length is 0 --> why this ?
Hi,
I am confused. I have a form with fields and after pressing the button i
got a surprise.
My Form:
String field; and the get/set Methode
When this field is not filled --> the form says the field is not null
but the length is 0 why that ?
Regards Stefan
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