| 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  listenerso that it will receiveAncestorEventswhen it or any of its ancestors
 move or are made visible or invisible. | 
| void | JComponent. removeAncestorListener(AncestorListener listener)Unregisters  listenerso that it will no longer receiveAncestorEvents. | 
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