PreferenceChangeEvent

PreferenceChangeEvent

java.util.prefs

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Java 1.4

serializable event

A PreferenceChangeEvent object is passed to the preferenceChange( ) method of any PreferenceChangeListener objects registered on a Preferences object whenever a preferences value is added to, removed from, or modified in that Preferences node. getNode( ) returns the affected Preferences object. getKey( ) returns name of the modified preference. If the preference value was added or modified, getNewValue( ) returns that value. If a preference was deleted, getNewValue( ) returns null .

Although this class inherits the Serializable interface, it is not actually serializable.

Figure 16-129. java.util.prefs.PreferenceChangeEvent

 public class  PreferenceChangeEvent  extends java.util.EventObject {  // Public Constructors  public  PreferenceChangeEvent  (Preferences  node  , String  key  , String  newValue  );  // Public Instance Methods  public String  getKey  ( );        public String  getNewValue  ( );        public Preferences  getNode  ( );   } 

Passed To

PreferenceChangeListener.preferenceChange( )