Serializable
IndexedPropertyChangeEvent
public class PropertyChangeEvent extends EventObject
Normally PropertyChangeEvents are accompanied by the name and the old and new value of the changed property. If the new value is a primitive type (such as int or boolean) it must be wrapped as the corresponding java.lang.* Object type (such as Integer or Boolean).
Null values may be provided for the old and the new values if their true values are not known.
An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values should also be null.
source
Constructor | Description |
---|---|
PropertyChangeEvent |
Constructs a new PropertyChangeEvent . |
Modifier and Type | Method | Description |
---|---|---|
Object |
getNewValue() |
Gets the new value for the property, expressed as an Object. |
Object |
getOldValue() |
Gets the old value for the property, expressed as an Object. |
Object |
getPropagationId() |
The "propagationId" field is reserved for future use. |
String |
getPropertyName() |
Gets the programmatic name of the property that was changed. |
void |
setPropagationId |
Sets the propagationId object for the event. |
String |
toString() |
Returns a string representation of the object. |
getSource
public PropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue)
PropertyChangeEvent
.source
- the bean that fired the eventpropertyName
- the programmatic name of the property that was changedoldValue
- the old value of the propertynewValue
- the new value of the propertyIllegalArgumentException
- if source
is null
public String getPropertyName()
public Object getNewValue()
public Object getOldValue()
public void setPropagationId(Object propagationId)
propagationId
- The propagationId object for the event.public Object getPropagationId()
public String toString()
toString
in class EventObject
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/beans/PropertyChangeEvent.html