error printing from non-FX thread

try to print scene with Text node:


Exception in thread "Thread-11" java.lang.IllegalStateException: Not on FX application thread; currentThread = Thread-11
at com.sun.javafx.tk.Toolkit.checkFxUserThread(Toolkit.java:209)
at com.sun.javafx.tk.quantum.QuantumToolkit.checkFxUserThread(QuantumToolkit.java:392)
at javafx.scene.Scene.addToDirtyList(Scene.java:512)
at javafx.scene.Node.addToSceneDirtyList(Node.java:417)
at javafx.scene.Node.impl_markDirty(Node.java:408)
at javafx.scene.shape.Shape.impl_markDirty(Shape.java:927)
at javafx.scene.Node.impl_geomChanged(Node.java:3686)
at javafx.scene.text.Text.impl_geomChanged(Text.java:772)
at javafx.scene.text.Text.needsTextLayout(Text.java:202)
at javafx.scene.text.Text.needsFullTextLayout(Text.java:197)
at javafx.scene.text.Text.access$400(Text.java:96)
at javafx.scene.text.Text$4.invalidated(Text.java:396)
at javafx.beans.property.StringPropertyBase.markInvalid(StringPropertyBase.java:109)
at javafx.beans.property.StringPropertyBase.access$000(StringPropertyBase.java:49)
at javafx.beans.property.StringPropertyBase$Listener.invalidated(StringPropertyBase.java:229)
at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:135)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at javafx.beans.binding.StringBinding.invalidate(StringBinding.java:171)
at com.sun.javafx.binding.BindingHelperObserver.invalidated(BindingHelperObserver.java:51)
at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:135)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at javafx.beans.property.ReadOnlyObjectWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(ReadOnlyObjectWrapper.java:176)
at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:142)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.print.PrinterJob.endJob(PrinterJob.java:521)
at test.printing.app.PrintingBase$PrintHandler.print(PrintingBase.java:287)
at test.printing.app.PrintingBase$PrintHandler$2.run(PrintingBase.java:313)
at java.lang.Thread.run(Thread.java:724)




another one, starting from PrinterJob.printPage():

Exception in thread "Thread-7" java.lang.IllegalStateException: Not on FX application thread; currentThread = Thread-7
at com.sun.javafx.tk.Toolkit.checkFxUserThread(Toolkit.java:209)
at com.sun.javafx.tk.quantum.QuantumToolkit.checkFxUserThread(QuantumToolkit.java:392)
at javafx.scene.Scene.addToDirtyList(Scene.java:512)
at javafx.scene.Node.addToSceneDirtyList(Node.java:417)
at javafx.scene.Node.impl_markDirty(Node.java:408)
at javafx.scene.shape.Shape.impl_markDirty(Shape.java:927)
at javafx.scene.Node.impl_geomChanged(Node.java:3686)
at javafx.scene.text.Text.impl_geomChanged(Text.java:772)
at javafx.scene.text.Text.needsTextLayout(Text.java:202)
at javafx.scene.text.Text.needsFullTextLayout(Text.java:197)
at javafx.scene.text.Text.access$400(Text.java:96)
at javafx.scene.text.Text$4.invalidated(Text.java:396)
at javafx.beans.property.StringPropertyBase.markInvalid(StringPropertyBase.java:109)
at javafx.beans.property.StringPropertyBase.access$000(StringPropertyBase.java:49)
at javafx.beans.property.StringPropertyBase$Listener.invalidated(StringPropertyBase.java:229)
at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:135)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at javafx.beans.binding.StringBinding.invalidate(StringBinding.java:171)
at com.sun.javafx.binding.BindingHelperObserver.invalidated(BindingHelperObserver.java:51)
at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:135)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at javafx.beans.property.ReadOnlyObjectWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(ReadOnlyObjectWrapper.java:176)
at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:142)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:145)
at javafx.print.PrinterJob.printPage(PrinterJob.java:365)
at javafx.print.PrinterJob.printPage(PrinterJob.java:387)
at test.printing.app.PrintingBase$PrintHandler.print(PrintingBase.java:285)
at test.printing.app.PrintingBase$PrintHandler$2.run(PrintingBase.java:313)
at java.lang.Thread.run(Thread.java:724)