question: protected final void fireVetoableChange ( String propertyName , double oldValue , double newValue ) throws PropertyVetoException { fireVetoableChange ( propertyName , Double . valueOf ( oldValue ) , Double . valueOf ( newValue ) ) ; }
target:  Support for reporting changes for constrained integer properties. This method can be called before a constrained property will be changed and it will send the appropriate PropertyChangeEvent to any registered VetoableChangeListeners.