EventBus/src/org/greenrobot/eventbus/EventBus.java
public static EventBus getDefault() {
        EventBus instance = defaultInstance;
        if (instance == null) {
            synchronized (EventBus.class) {
                instance = EventBus.defaultInstance;
                if (instance == null) {
                    instance = EventBus.defaultInstance = new EventBus();
                }
            }
        }
        return instance;
    }
public static EventBus getDefault() {
        EventBus instance = defaultInstance;
        if (instance == null) {
            synchronized (EventBus.class) {
                instance = EventBus.defaultInstance;
                if (instance == null) {
                    instance = EventBus.defaultInstance = new EventBus();
                }
            }
        }
        return instance;
    }
public static EventBus getDefault ( ) { EventBus instance = defaultInstance ; if ( instance == null ) { synchronized ( EventBus . class ) { instance = EventBus . defaultInstance ; if ( instance == null ) { instance = EventBus . defaultInstance = new EventBus ( ) ; } } } return instance ; }
Convenience singleton for apps using a process-wide EventBus instance.
Convenience singleton for apps using a process - wide EventBus instance .