Hi,
I have noticed the following problem with exception handling and
multiple JFXPanels (FX 2.2):
1. Two JFXPanels, J1 and J2
2. Throw NPE in layoutChildren of a control inside J1
This would print a stacktrace (see below). Then J2 is blocked: mouse
clicks have no effect anymore. I think I have seen something similar
with invalid FXML but did not check again now. On the other hand, if a
button action-event handler throws an exception everything is fine:
stacktrace is printed but the JFXPanels stay alive.
What is the deal here? When are exceptions "lethal", and what can I do
to protect against this, preferably without adding a try..catch to each
layoutChildren (and whereever else this might be needed)...
Werner
java.lang.NullPointerException: kaboom
at
mint.javafx.scene.layout.designerpane.MintDesignerPane.layoutChildren(MintDesignerPane.java:192)
at javafx.scene.Parent.layout(Parent.java:1018)
at javafx.scene.Parent.layout(Parent.java:1028)
at javafx.scene.Scene.layoutDirtyRoots(Scene.java:513)
at javafx.scene.Scene.doLayoutPass(Scene.java:484)
at javafx.scene.Scene.access$3900(Scene.java:169)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2199)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:363)
at
com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:460)
at
com.sun.javafx.tk.quantum.QuantumToolkit$9.run(QuantumToolkit.java:329)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at
com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:73)
at java.lang.Thread.run(Unknown Source)
