/**
* Reinitialize World Wind to its initial ready state. Shut down and restart all World Wind
* services and clear all World Wind memory caches. Cache memory will be released at the next JVM
* garbage collection.
*
* <p>Call this method to reduce World Wind's current resource usage to its initial, empty state.
* This is typically required by applets when the user leaves the applet page.
*
* <p>The state of any open {@link WorldWindow} objects is indeterminate subsequent to invocation
* of this method. The core WorldWindow objects attempt to shut themselves down cleanly during the
* call, but their resulting window state is undefined.
*
* <p>World Wind can continue to be used after calling this method.
*/
public static synchronized void shutDown() {
instance.wwo.firePropertyChange(SHUTDOWN_EVENT, null, -1);
instance.dispose();
instance = new WorldWind();
}
