public interface Event
Event interface is used to provide contextual information
 about an event to the handler processing the event. An object which
 implements the Event interface is generally passed as the
 first parameter to an event handler. More specific context information is
 passed to event handlers by deriving additional interfaces from
 Event which contain information directly relating to the
 type of event they accompany. These derived interfaces are also
 implemented by the object passed to the event listener.
 See also the Document Object Model (DOM) Level 2 Events Specification.
| Modifier and Type | Field and Description | 
|---|---|
| static short | AT_TARGETThe event is currently being evaluated at the target
  EventTarget. | 
| static short | BUBBLING_PHASEThe current event phase is the bubbling phase. | 
| static short | CAPTURING_PHASEThe current event phase is the capturing phase. | 
| Modifier and Type | Method and Description | 
|---|---|
| boolean | getBubbles()Used to indicate whether or not an event is a bubbling event. | 
| boolean | getCancelable()Used to indicate whether or not an event can have its default action
 prevented. | 
| EventTarget | getCurrentTarget()Used to indicate the  EventTargetwhoseEventListenersare currently being processed. | 
| short | getEventPhase()Used to indicate which phase of event flow is currently being
 evaluated. | 
| EventTarget | getTarget()Used to indicate the  EventTargetto which the event was
 originally dispatched. | 
| long | getTimeStamp()Used to specify the time (in milliseconds relative to the epoch) at
 which the event was created. | 
| String | getType()The name of the event (case-insensitive). | 
| void | initEvent(String eventTypeArg,
         boolean canBubbleArg,
         boolean cancelableArg)The  initEventmethod is used to initialize the value of anEventcreated through theDocumentEventinterface. | 
| void | preventDefault()If an event is cancelable, the  preventDefaultmethod is
 used to signify that the event is to be canceled, meaning any default
 action normally taken by the implementation as a result of the event
 will not occur. | 
| void | stopPropagation()The  stopPropagationmethod is used prevent further
 propagation of an event during event flow. | 
static final short CAPTURING_PHASE
static final short AT_TARGET
EventTarget.static final short BUBBLING_PHASE
String getType()
EventTarget getTarget()
EventTarget to which the event was
 originally dispatched.EventTarget getCurrentTarget()
EventTarget whose
 EventListeners are currently being processed. This is
 particularly useful during capturing and bubbling.short getEventPhase()
boolean getBubbles()
boolean getCancelable()
long getTimeStamp()
timeStamp may
 be not available for all events. When not available, a value of 0
 will be returned. Examples of epoch time are the time of the system
 start or 0:0:0 UTC 1st January 1970.void stopPropagation()
stopPropagation method is used prevent further
 propagation of an event during event flow. If this method is called
 by any EventListener the event will cease propagating
 through the tree. The event will complete dispatch to all listeners
 on the current EventTarget before event flow stops. This
 method may be used during any stage of event flow.void preventDefault()
preventDefault method is
 used to signify that the event is to be canceled, meaning any default
 action normally taken by the implementation as a result of the event
 will not occur. If, during any stage of event flow, the
 preventDefault method is called the event is canceled.
 Any default action associated with the event will not occur. Calling
 this method for a non-cancelable event has no effect. Once
 preventDefault has been called it will remain in effect
 throughout the remainder of the event's propagation. This method may
 be used during any stage of event flow.void initEvent(String eventTypeArg, boolean canBubbleArg, boolean cancelableArg)
initEvent method is used to initialize the value of an
 Event created through the DocumentEvent
 interface. This method may only be called before the
 Event has been dispatched via the
 dispatchEvent method, though it may be called multiple
 times during that phase if necessary. If called multiple times the
 final invocation takes precedence. If called from a subclass of
 Event interface only the values specified in the
 initEvent method are modified, all other attributes are
 left unchanged.eventTypeArg - Specifies the event type. This type may be any
   event type currently defined in this specification or a new event
   type.. The string must be an XML name. Any new event type must not
   begin with any upper, lower, or mixed case version of the string
   "DOM". This prefix is reserved for future DOM event sets. It is
   also strongly recommended that third parties adding their own
   events use their own prefix to avoid confusion and lessen the
   probability of conflicts with other new events.canBubbleArg - Specifies whether or not the event can bubble.cancelableArg - Specifies whether or not the event's default
   action can be prevented. Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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