| Package | Description | 
|---|---|
| javax.swing | 
 Provides a set of "lightweight"
(all-Java language) components that,
to the maximum degree possible, work the same on all platforms. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
AncestorListener[] | 
JComponent.getAncestorListeners()
Returns an array of all the ancestor listeners
 registered on this component. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
JComponent.addAncestorListener(AncestorListener listener)
Registers  
listener so that it will receive
 AncestorEvents when it or any of its ancestors
 move or are made visible or invisible. | 
void | 
JComponent.removeAncestorListener(AncestorListener listener)
Unregisters  
listener so that it will no longer receive
 AncestorEvents. | 
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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