Is it valid to call JComponent#paintImmediately on a non-EDT thread (yet)?

[Philip Race]

Because (like in this case), an AWT component might actually be 
implemented using Swing,
the recommendation is to treat AWT components like Swing, and update 
them only on the EDT.

-phil.

On 11/15/23 4:01 PM, Nikita Provotorov wrote:
> Hello!
> I've discovered that on X11 platforms a call 
> of java.awt.TextComponent#setText can lead to a call 
> of javax.swing.JComponent#paintImmediately(java.awt.Rectangle) on the 
> same thread.
> Since java.awt.TextComponent#setText is allowed to be called on any 
> thread (because it's AWT, not Swing), JComponent#paintImmediately may 
> be called outside of EDT. Is this a valid behavior?
>
> The following stacktrace shows how exactly this can happen:
>
>     at javax.swing.JComponent.paintImmediately
>     at sun.awt.X11.XTextAreaPeer$AWTTextArea.repaintNow
>     at sun.awt.X11.XTextAreaPeer.repaintText
>     at sun.awt.X11.XTextAreaPeer.setText
>     at java.awt.TextComponent.setText
>
>
> Best regards,
> Nikita Provotorov
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