Java Module java.prefs Package java.util.prefs Interface NodeChangeListener（JDK11）

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All Superinterfaces:

EventListener
```
public interface NodeChangeListener
extends EventListener
```
A listener for receiving preference node change events.

Since:

1.4

See Also:

Preferences, NodeChangeEvent, PreferenceChangeListener

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`childAdded(NodeChangeEvent evt)`	This method gets called when a child node is added.
`void`	`childRemoved(NodeChangeEvent evt)`	This method gets called when a child node is removed.

- Method Detail
  - childAdded
```
void childAdded(NodeChangeEvent evt)
```
    This method gets called when a child node is added.
    
    Parameters:
    
    evt - A node change event object describing the parent and child node.
  - childRemoved
```
void childRemoved(NodeChangeEvent evt)
```
    This method gets called when a child node is removed.
    
    Parameters:
    
    evt - A node change event object describing the parent and child node.

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