I cannot create a new WebView programatically. Simply calling new WebView() causes the following exception:
java.lang.ExceptionInInitializerError
at javafx.web/javafx.scene.web.WebEngine.<clinit>(WebEngine.java:339)
at javafx.web/javafx.scene.web.WebView.<init>(WebView.java:260)
// omitting unrelated stacktraces
at javafx.base/com.sun.javafx.event.CompositeEventHandler$NormalEventFilterRecord.handleCapturingEvent(CompositeEventHandler.java:282)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchCapturingEvent(CompositeEventHandler.java:98)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchCapturingEvent(EventHandlerManager.java:223)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchCapturingEvent(EventHandlerManager.java:180)
at javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchCapturingEvent(CompositeEventDispatcher.java:43)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:52)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.base/javafx.event.Event.fireEvent(Event.java:198)
at javafx.graphics/javafx.scene.Scene$KeyHandler.process(Scene.java:4058)
at javafx.graphics/javafx.scene.Scene$KeyHandler.access$1500(Scene.java:4004)
at javafx.graphics/javafx.scene.Scene.processKeyEvent(Scene.java:2121)
at javafx.graphics/javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2595)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:217)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:149)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$1(GlassViewEventHandler.java:248)
at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:390)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:247)
at javafx.graphics/com.sun.glass.ui.View.handleKeyEvent(View.java:547)
at javafx.graphics/com.sun.glass.ui.View.notifyKey(View.java:971)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.UnsupportedOperationException: not implemented
at javafx.base/com.sun.javafx.logging.PlatformLogger.getName(PlatformLogger.java:121)
at javafx.web/com.sun.webkit.perf.PerfLogger.fullName(PerfLogger.java:155)
at javafx.web/com.sun.webkit.perf.PerfLogger.registerProbe(PerfLogger.java:201)
at javafx.web/com.sun.webkit.perf.PerfLogger.startCount(PerfLogger.java:227)
at javafx.web/com.sun.webkit.perf.PerfLogger.<init>(PerfLogger.java:90)
at javafx.web/com.sun.webkit.perf.PerfLogger.getLogger(PerfLogger.java:57)
at javafx.web/com.sun.webkit.perf.PerfLogger.getLogger(PerfLogger.java:84)
at javafx.web/com.sun.webkit.Invoker.<clinit>(Invoker.java:34)
... 37 more
Is it a bug? I am using OpenJFX 11.0.1 and OpenJDK 11.0.1.
Updates:
As mentioned in the comments this bug will be fixed in OpenJFX 12.
Here's the problem code from com.sun.javafx.logging.PlatformLogger:
@Override
public String getName() {
throw new UnsupportedOperationException("not implemented");
}
As you can see, it does nothing but throw the observed exception. This is true of all the "implemented" java.lang.System.Logger methods.
If you follow the code, as outlined by the stack trace you provide, the getName method is invoked ultimately because a com.sun.webkit.perf.PerfLogger is instantiated during the process of initializing the WebEngine and, by extension, com.sun.webkit.Invoker classes. However, getName is only called when the PerfLogger is enabled.
From a cursory glance, a PerfLogger wraps a com.sun.javafx.logging.PlatformLogger which itself wraps a System.Logger. The PerfLogger is enabled if the System.Logger returns true for isLoggable(System.Logger.Level.FINE) at the time the PerfLogger is constructed.
In this case, this process results in a System.Logger with the name "com.sun.webkit.perf.Locks" being created. What this means is that you can avoid the UnsupportedOperationException if you configure this System.Logger to not log anything at Level.FINE or "lower". Doing this will make the PerfLogger "disabled" which prevents getName from being called down the line.
Note: This is based on the source code of OpenJFX 11.0.1. Everything mentioned is an implementation detail and can change without notice.