Re: Matisse is throwing exception until I restart NetBeans

Witold Szczerba wrote:
> 06-11-10, Tomas Pavek <[email protected]> napisał(a):
>> [Please post reports like this rather to nbusers mailing list... Thanks]
> 
> Well, I have to confess that sometimes I find it hard to decide which
> mailing list to choose :/

You can post almost everything to nbusers - unless you are not a developer 
developing NetBeans or NetBeans platform based product. The nbui mailing list 
falls more to the second category. It is for:
    "People interested in the usability of the IDE and helping to improve
     it - discussions on the graphical appearance of the IDE, its key
     bindings, workflow issues ... Note this is not a support forum."

> 
>> The exception you attached is probably caused by a bug in the GUI builder
>> (would be worth reporting in IssueZilla), however it is caused but 
>> another exception - DataPicker component fails on instantiation
>> (thus the layoutloading fails).
>> When you compile the other form and reopen the WizytyForm form, a new
>> classloader is used to load the classes - so new version of
>> DataPicker class
>> is loaded, but it probably interacts with the old version of the
>> BasicDatePickerUI. If you restart, everything seems ok - when the 
>> class is loaded first time.
> 
> You are right, I've removed this component and now there is no problem.
> So it looks like the bug in GUI is that it doesn't catch the exception
> that is thrown by DataPicker?
> Probably I will look for another component (btw: why there is no
> component like this in Swing... Spinner with date is not good enough.
> 

I think it is planned for Java 7. But have you tried the SwingX component? 
There is also a JXDatePicker.

https://swingx.dev.java.net/

   - Tomas

> 
>> Would be good to investigate why this happens... especially the
>> CalendarPane.updateUI method - how it gets the UI delegate.
>>
>>    - Tomas
> 
> I'm afraid that might be too difficult for me as I have no idea how
> Swing is working under the hood. Investigating that would stop me from
> continuing my investigations in other areas I have to figure out,
> starting from general Swing data-aware application architecture up to
> JEE 5/JPA/DB/JAX-WS (maybe JSR-170/283 as well). :(
> 
> Java developer life is not easy... but actually quite exciting :)