WebView wv = new WebView(); throws an exception

[Kevin Rushforth]

[re-routing to openjfx-dev]

Technical questions should be discussed on openjfx-dev.

There isn't enough information to be sure, but you might double-check 
whether you are creating the WebView on the JavaFX application thread. 
If not, you are running into a known bug, JDK-8087718 [1].

-- Kevin

[1] https://bugs.openjdk.org/browse/JDK-8087718

On 10/4/2025 9:10 AM, Davide Perini wrote:
> Hi there,
>
> I noticed recently that this code
> WebView wv = new WebView();
> throws an exception that creates no real problem but it is a bit annoyng.
>
> The exception is thrown here:
> class PropertyHelper {
>     static boolean getBooleanProperty(String var0) {
>         try {
>             String var1 = System.getProperty(var0);
>             return "true".equals(var1.toLowerCase());
>         } catch (Exception var2) {
>             return false;
>         }
>     }
> }
>
> If I manually set
> System.setProperty("javafx.sg.warn", "true");
>
> this exception is not thrown.
>
> But why?
>