EventQueue

java.lang.Object
- javax.mail.EventQueue

All Implemented Interfaces:

java.lang.Runnable
```
class EventQueue
extends java.lang.Object
implements java.lang.Runnable
```
Package private class used by Store & Folder to dispatch events. This class implements an event queue, and a dispatcher thread that dequeues and dispatches events from the queue.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`(package private) static class`	`EventQueue.QueueElement`	A "struct" to put on the queue.
`(package private) static class`	`EventQueue.TerminatorEvent`	A special event that causes the queue processing task to terminate.

Field Summary

Fields
Modifier and Type	Field	Description
`private static java.util.WeakHashMap<java.lang.ClassLoader,EventQueue>`	`appq`
`private java.util.concurrent.Executor`	`executor`
`private java.util.concurrent.BlockingQueue<EventQueue.QueueElement>`	`q`

Constructor Summary

Constructors
Constructor Description

EventQueue(java.util.concurrent.Executor ex)
Construct an EventQueue using the specified Executor.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) void`	`enqueue(MailEvent event, java.util.Vector<? extends java.util.EventListener> vector)`	Enqueue an event.
`(package private) static EventQueue`	`getApplicationEventQueue(java.util.concurrent.Executor ex)`	Create (if necessary) an application-scoped event queue.
`void`	`run()`	Pull events off the queue and dispatch them.
`(package private) void`	`terminateQueue()`	Terminate the task running the queue, but only if there is a queue.

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

- Field Detail
  - q
```
private volatile java.util.concurrent.BlockingQueue<EventQueue.QueueElement> q
```
  - executor
```
private java.util.concurrent.Executor executor
```
  - appq
```
private static java.util.WeakHashMap<java.lang.ClassLoader,EventQueue> appq
```
- Constructor Detail
  - EventQueue
```
EventQueue(java.util.concurrent.Executor ex)
```
    Construct an EventQueue using the specified Executor. If the Executor is null, threads will be created as needed.
- Method Detail
  - enqueue
```
void enqueue(MailEvent event,
             java.util.Vector<? extends java.util.EventListener> vector)
```
    Enqueue an event.
  - terminateQueue
```
void terminateQueue()
```
    Terminate the task running the queue, but only if there is a queue.
  - getApplicationEventQueue
```
static EventQueue getApplicationEventQueue(java.util.concurrent.Executor ex)
```
    Create (if necessary) an application-scoped event queue. Application scoping is based on the thread's context class loader.
  - run
```
public void run()
```
    Pull events off the queue and dispatch them.
    
    Specified by:
    
    run in interface java.lang.Runnable