java.util.prefs: public class: PreferenceChangeEvent

java.util.prefs
public class: PreferenceChangeEvent [javadoc | source]

java.lang.Object
   java.util.EventObject
      java.util.prefs.PreferenceChangeEvent

An event emitted by a Preferences node to indicate that a preference has been added, removed or has had its value changed.

Note, that although PreferenceChangeEvent inherits Serializable interface from EventObject, it is not intended to be Serializable. Appropriate serialization methods are implemented to throw NotSerializableException.

Also see:

Preferences

PreferenceChangeListener

NodeChangeEvent

author: Josh - Bloch

since: 1.4 -

serial: exclude -

Constructor:

Constructor:
public PreferenceChangeEvent(Preferences node, String key, String newValue) { super(node); this.key = key; this.newValue = newValue; } Constructs a new `PreferenceChangeEvent` instance. Parameters: `node` - The Preferences node that emitted the event. `key` - The key of the preference that was changed. `newValue` - The new value of the preference, or `null` if the preference is being removed.

 public PreferenceChangeEvent(Preferences node,
    String key,
    String newValue) {
        super(node);
        this.key = key;
        this.newValue = newValue;
}

PreferenceChangeEvent

Parameters:

node - The Preferences node that emitted the event.

key - The key of the preference that was changed.

newValue - The new value of the preference, or null if the preference is being removed.

Method from java.util.prefs.PreferenceChangeEvent Summary:
getKey, getNewValue, getNode

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from java.util.prefs.PreferenceChangeEvent Detail:
public String getKey() { return key; } Returns the key of the preference that was changed.
public String getNewValue() { return newValue; } Returns the new value for the preference.
public Preferences getNode() { return (Preferences) getSource(); } Returns the preference node that emitted the event.

Method from java.util.prefs.PreferenceChangeEvent Detail:

 public String getKey() {
        return key;
}

Returns the key of the preference that was changed.

 public String getNewValue() {
        return newValue;
}

Returns the new value for the preference.

 public Preferences getNode() {
        return (Preferences) getSource();
}

Returns the preference node that emitted the event.