Help me! How to block my house?

Troubleshooting graphics
1


I import model houses from 3ds max
but my player can walk through them.
How to set to block house ? I don't understand about collision  :?

public void buildHouse(String name,String file) {
    Node model = null;
        try {
        MaxToJme C1 = new MaxToJme();
        ByteArrayOutputStream BO = new ByteArrayOutputStream();
            URL maxFile = Level3.class.getClassLoader().getResource(file);
            C1.convert(new BufferedInputStream(maxFile.openStream()),BO);
            model = (Node)BinaryImporter.getInstance().load(new ByteArrayInputStream(BO.toByteArray()));
       
           
        model.setModelBound(new BoundingBox());
            model.updateModelBound();   
    } catch (IOException e) {
            logger
                    .throwing(this.getClass().toString(), "buildPlayer()",
                            e);
        }
        this.attachChild(model);
}



private void buildVillage() {
        //Create house
    n2 = new Node("Node 2 for collision");
        Village village1 = new Village();
        village1.buildHouse("house1","Model/modelhouse.3ds");
        village1.setLocalScale(1f);
        village1.setLocalTranslation(new Vector3f(70,-1.83f,70));
        scene.attachChild(village1);
     
    }

my output
2

You'll have to implement some kind of collision detection to your scene.

Search for collision detection on the forum and wiki. TestTerrainWalking, TestCollisionTree, and TestCollision will also help.