import com.jme3.bullet.collision.PhysicsCollisionListener; //导入依赖的package包/类
public void distributeEvents() {
    //add collision callbacks
    synchronized (collisionEvents) {
        for (Iterator<PhysicsCollisionEvent> it = collisionEvents.iterator(); it.hasNext();) {
            PhysicsCollisionEvent physicsCollisionEvent = it.next();
            for (PhysicsCollisionListener listener : collisionListeners) {
                listener.collision(physicsCollisionEvent);
            }
            //recycle events
            eventFactory.recycle(physicsCollisionEvent);
            it.remove();
        }
    }
}
 

import com.jme3.bullet.collision.PhysicsCollisionListener; //导入依赖的package包/类
/**
 * Adds a CollisionListener that will be informed about collision events
 * @param listener the CollisionListener to add
 */
public void addCollisionListener(PhysicsCollisionListener listener) {
    collisionListeners.add(listener);
}
 

import com.jme3.bullet.collision.PhysicsCollisionListener; //导入依赖的package包/类
/**
 * Removes a CollisionListener from the list
 * @param listener the CollisionListener to remove
 */
public void removeCollisionListener(PhysicsCollisionListener listener) {
    collisionListeners.remove(listener);
}