Question: I'm implement a hashing table using `ArrayList` and `LinkedList` as bucket.

```
ArrayList<LinkedList<node>> db = new ArrayList<LinkedList<node>>();

```

How can I add new element in this `ArrayList`.
Would it be something like this?

```
this.db.add(hash, element);

```

Answer: 
```
Intent homeIntent = new Intent(this, HomeActivity.class);
homeIntent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(homeIntent);

```

this will start the HomeActivity, if the activity still in memory, it will just bring it to front.
If you want to maximize the application you need user interface in that case you can add your application in notification bar, once user click on notification bar you can open in your word can maximize the same. Adding your application in to notification bar you can get many tutorials :

[Notification](http://developer.android.com/guide/topics/ui/notifiers/notifications.html)