Current Insert code...->Add Property... is SE centric. JavaFX2 introduces new property types and conventions, that are commonly used in FX development.

See Example1 at http://docs.oracle.com/javafx/2/binding/jfxpub-binding.htm

NetBeans should support adding FX properties like SimpleDoubleProperty etc and the respective setters/getters. Note that in FX it is standard to have three of them instead of two (the third one being a getter not of value but of the property itself):

    // Define a variable to store the property
    private DoubleProperty amountDue = new SimpleDoubleProperty();
 
    // Define a getter for the property's value
    public final double getAmountDue(){return amountDue.get();}
 
    // Define a setter for the property's value
    public final void setAmountDue(double value){amountDue.set(value);}
 
     // Define a getter for the property itself
    public DoubleProperty amountDueProperty() {return amountDue;}