NodeChangeListener (Java Platform SE 8 )
Keywords: java.util.prefs.NodeChangeListener interface
Date: 2026-04-17

compact3
java.util.prefs

## Interface NodeChangeListener

- 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 and 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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