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Von: Steve Shucker [mailto:[EMAIL PROTECTED]
Gesendet: Dienstag, 12. September 2006 16:03
An: Tapestry users
Betreff: Re: WG: Question: Can not get access to object fields (Null Pointer
Exception) pls pls help!
As a general rule, it's safer to put the literal first in statements
like
As a general rule, it's safer to put the literal first in statements
like this:
"admin".equals(user.getState())
If anyone wants to say that it looks/reads a bit funny, I'll agree.
It's an odd syntax, but it protects you from NPEs.
-Steve
Martin Strand wrote:
Well, if you get a NPE on this
Well, if you get a NPE on this line:
>> user.getState().equals("admin")
then either "user" or "getState()" is null, right?
And, since "user" is definitely not null, your private String "state" is
obviously null.
Perhaps you should add something like this:
>> private String state = "initial state"
I'd say because user.getState() returns null. Right?
On 9/12/06, Michael Wölm <[EMAIL PROTECTED]> wrote:
Hi,
Sadly, nobody have helped me with my problem. I dont know why. Am I too
noob
or is my question incomprehensible? I would be pleased, if anybody could
give me an advice for my problem.
Hi,
Sadly, nobody have helped me with my problem. I dont know why. Am I too noob
or is my question incomprehensible? I would be pleased, if anybody could
give me an advice for my problem.
Greettings from Germany,
Michael Wölm
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