🚀 go-pugleaf

If you come from Delphi then you know that when you want to update some 
property in a VCL control you have to do this in the main thread and for 
that purpose in TThread you have Synchronize method that you use to call 
other methods which should be executed in the context of the main thread.

In java you have to follow the same rules but here it is a little bit 
different. The way it is done is by use methods called invokeLater and 
invokeAndWait

These 2 methods are static and are defined in SwingUtilities class.

Doychin

Zvonko wrote:
> hi!
> 
>     I would like some details in implemeting a jProgressBar while geting 
> data from database. It is very complicated for me to understand all this 
> thread stuff (i worked in Delphi before, and there you just give the 
> progressBar min, max and current value and it works). If someone would be so 
> kind to help me.
> 
>     I am working in JBuilder and am a newbie. I need an example how to use 
> progreesBar (or monitor) in a method inside a class, and call this method 
> from actionPerformed of a button!?
> 
> 
> Thanks guys.
> Zvonko 
> 
> 

Doychin Bondzhev wrote:

> If you come from Delphi then you know that when you want to update some 
> property in a VCL control you have to do this in the main thread and for 
> that purpose in TThread you have Synchronize method that you use to call 
> other methods which should be executed in the context of the main thread.
> 
> In java you have to follow the same rules but here it is a little bit 
> different. The way it is done is by use methods called invokeLater and 
> invokeAndWait
> 
> These 2 methods are static and are defined in SwingUtilities class.

In addition, there is a tutorial on JProgressBar which discusses this:

http://java.sun.com/docs/books/tutorial/uiswing/components/progress.html
http://java.sun.com/developer/TechTips/2000/tt0912.html#tip2


The Swing Tutorial may be of general interest to both newcomers and
experienced hands who haven't done Swing in a while (myself included):

http://java.sun.com/developer/technicalArticles/GUI/swingtut/index.html


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