TextArea area = new TextArea("Text");
area.textProperty().bind(new SimpleStringProperty());

Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:378)
        at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:27)
        at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:97)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalArgumentException
        at javafx.scene.control.TextArea$TextAreaContent.insert(TextArea.java:98)
        at javafx.scene.control.TextInputControl$TextProperty.doSet(TextInputControl.java:1015)
        at javafx.scene.control.TextInputControl$TextProperty.bind(TextInputControl.java:965)
        at main.Main.start(Main.java:25)
        at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:298)
        at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:136)
        at com.sun.javafx.application.PlatformImpl$3.run(PlatformImpl.java:108)
        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$2$1.run(WinApplication.java:62)
        ... 1 more