minecraft Event Listeners in Bukkit Un-registering events or listeners
Example
You can un-register individual events, entire listener classes or all events registered by your plugin or even by other plugins!
Un-register specific event
Each event class has the getHandlerList() static method, call that and then you can use .unregister() method.
PlayerInteractEvent.getHandlerList().unregister(plugin);
// this will unregister all PlayerInteractEvent instances from the plugin
// you can also specify a listener class instead of plugin.
Now you know why you'll need the getHandlerList() in your custom events.
Un-register all events
Using the HandlerList class and its unregisterAll() static method you can easily unregister events from listener classes or plugins.
HandlerList.unregisterAll(plugin);
// this will unregister all events from the specified plugin
// you can also specify a listener class instead of plugin.
