<Swing Dev> JSeparator rendered incorrectly on Windows 7

[Alex Lam S.L.]

Hi there,

Thanks for the clarification.

To be honest, I will probably never have to touch that because I
always use a GUI builder, but it's always nice to learn something new.


Regards,
Alex.



On Wed, Apr 4, 2012 at 10:25 AM, Pavel Porvatov
<pavel.porvatov at oracle.com> wrote:
> Hi Alex,
>
>> Hi there,
>>
>> I have found the cause of the problem - the difference between
>> JSeparator and JPopupMenu.Separator.
>>
>> As I use the GUI builder on NetBeans, I don't know how or when it has
>> decided to slip in a single JSeparator into the mix.
>>
>> Attached a simple test case demonstrating the problem, at least on Win7.
>>
>> It's not a big deal to me now I've discovered the cause, although it
>> would be nice to know the difference between these two classes...
>
> There are three separators and they were designed for different purposes:
> 1. javax.swing.JSeparator (used for menus)
> 2. javax.swing.JPopupMenu.Separator (used for JPopupMenus)
> 3. javax.swing.JToolBar.Separator (used for JToolbars)
>
> To avoid any confusion use correspondent separators in appropriate places or
> use addSeparator() methods from JMenu, JPopupMenu, and JToolbar.
>
> Regards, Pavel
>
>>
>> Regards,
>> Alex.
>>
>>
>>
>>
>> On Sun, Apr 1, 2012 at 8:25 PM, Alex Lam S.L.<alexlamsl at gmail.com>  wrote:
>>>
>>> Hi there,
>>>
>>> I will try and narrow it down to a simple(r) test case and get back to
>>> you.
>>>
>>>
>>> Regards,
>>> Alex.
>>>
>>>
>>>
>>> On Fri, Mar 30, 2012 at 10:24 AM, Pavel Porvatov
>>> <pavel.porvatov at oracle.com>  wrote:
>>>>
>>>> Hi Alex,
>>>>
>>>> Can you sent a small separated test? I used SwingSet2 demo with the same
>>>> Windows and jdk versions and the problem is not reproducible...
>>>>
>>>> Thanks, Pavel
>>>>
>>>>
>>>>> Hi there,
>>>>>
>>>>> I noticed that in some cases JSeparator would render differently (see
>>>>> attached photo - first one from the top, left window).
>>>>>
>>>>> It is repeatable - I can quit and re-run the app and the same
>>>>> JSeparator would be wrong. Curiously, I use the preview feature from
>>>>> NetBeans for the project code which generates this window, and the
>>>>> problem does not appear there.
>>>>>
>>>>>
>>>>> Confused,
>>>>> Alex.
>>>>>
>>>>> ---------------
>>>>>
>>>>> Microsoft Windows [Version 6.1.7601]
>>>>>
>>>>> java version "1.7.0_02"
>>>>> Java(TM) SE Runtime Environment (build 1.7.0_02-b13)
>>>>> Java HotSpot(TM) 64-Bit Server VM (build 22.0-b10, mixed mode)
>>>>
>>>>
>