PreferenceChangeListener (Java SE 26 & JDK 26)
Description: declaration: module: java.prefs, package: java.util.prefs, interface: PreferenceChangeListener
Keywords: java.util.prefs.PreferenceChangeListener interface

# 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.