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所有超级接口：
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EventListener
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所有已知实现类：
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BasicButtonListener,
BasicColorChooserUI.PropertyHandler,
BasicComboBoxUI.PropertyChangeHandler,
BasicComboPopup.PropertyChangeHandler,
BasicDirectoryModel,
BasicInternalFrameTitlePane.PropertyChangeHandler,
BasicInternalFrameUI.InternalFramePropertyChangeListener,
BasicLabelUI,
BasicListUI.PropertyChangeHandler,
BasicOptionPaneUI.PropertyChangeHandler,
BasicRootPaneUI,
BasicScrollBarUI.PropertyChangeHandler,
BasicScrollPaneUI.PropertyChangeHandler,
BasicSliderUI.PropertyChangeHandler,
BasicSplitPaneDivider,
BasicSplitPaneUI.PropertyHandler,
BasicTabbedPaneUI.PropertyChangeHandler,
BasicToolBarUI.PropertyListener,
BasicTreeUI.PropertyChangeHandler,
BasicTreeUI.SelectionModelPropertyChangeHandler,
BeanContextServicesSupport,
BeanContextSupport,
DefaultTableColumnModel,
JList.AccessibleJList,
JPopupMenu.AccessibleJPopupMenu,
JScrollPane.AccessibleJScrollPane,
JSpinner.DateEditor,
JSpinner.DefaultEditor,
JSpinner.ListEditor,
JSpinner.NumberEditor,
JTable.AccessibleJTable,
MetalComboBoxUI.MetalPropertyChangeListener,
MetalFileChooserUI.FilterComboBoxModel,
MetalLabelUI,
MetalRootPaneUI,
MetalSliderUI.MetalPropertyListener,
MetalToolBarUI.MetalRolloverListener,
ProgressMonitor.AccessibleProgressMonitor,
PropertyChangeListenerProxy
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public interface PropertyChangeListener
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extends
EventListener
无论 bean 何时更改 "bound" 属性，都会激发一个 "PropertyChange" 事件。可以向源 bean 注册一个 PropertyChangeListener，以便获得所有绑定 (bound) 属性更改的通知。
propertyChange
void propertyChange(PropertyChangeEvent evt)
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在绑定属性发生更改时调用此方法。
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参数：
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evt - 描述事件源和已更改属性的 PropertyChangeEvent 对象。