PreferenceChangeListener (Java SE 14 & JDK 14)
Description: declaration: module: java.prefs, package: java.util.prefs, interface: PreferenceChangeListener
Keywords: java.util.prefs.PreferenceChangeListener interface

Module java.prefs
Package java.util.prefs

# Interface PreferenceChangeListener

All Superinterfaces:
  `EventListener`

Functional Interface:
  This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

    @FunctionalInterface
    public interface PreferenceChangeListener
    extends EventListener

A listener for receiving preference change events.

Since:
  1.4
See Also:
  `Preferences`, `PreferenceChangeEvent`, `NodeChangeListener`

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `void` | `preferenceChange​(PreferenceChangeEvent evt)` | This method gets called when a preference is added, removed or when its value is changed.

- ## Method Details

  - ### preferenceChange

    void preferenceChange​(PreferenceChangeEvent evt)
    This method gets called when a preference is added, removed or when its value is changed.
    Parameters:
      `evt` - A PreferenceChangeEvent object describing the event source and the preference that has changed.