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  NullPointer when using ArrayList  (Read 247 times)
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Offline Reck

Senior Newbie





« Posted 2012-11-30 21:42:18 »

I am trying to make an arraylist of players in my game. However, i get a NullPointer when trying to add a player (string for testing purposes), in the init method. Here's the code:

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public class Chat extends BasicGame{
   
    private Board board;
    private Player player;
    private ArrayList<String> testList;
    private mySQL database;
 
    public Chat()
    {
        super("MovingSystem");
    }
   
    @Override
    public void init(GameContainer gc) throws SlickException {
        this.player = new Player("Patrick");
        this.board = new Board();
       
        testList.add("Test");
    }


Why is it failing?
Offline Regenuluz
« Reply #1 - Posted 2012-11-30 21:45:30 »

Uhm, a little more info is required ^^

Where does it get the nullpointer exception?
Offline matheus23

JGO Wizard


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« Reply #2 - Posted 2012-11-30 21:45:50 »

You first have to create the ArrayList:

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testList = new ArrayList<String>();


EDIT: @Regenuluz:
Muhahaha! Cheesy
My Error-finding eye jumps in. At first I thought you'd be faster at reporting the error Grin

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Offline Regenuluz
« Reply #3 - Posted 2012-11-30 21:46:40 »

You first have to create the ArrayList:

Haha, I totally didn't notice that it wasn't initialized xD Good catch.

Offline matheus23

JGO Wizard


Medals: 77
Projects: 3


You think about my Avatar right now!


« Reply #4 - Posted 2012-11-30 21:46:55 »

EDIT inception

See my:
    My development Blog:     | Or look at my RPG | Or simply my coding
http://matheusdev.tumblr.comRuins of Revenge  |      On Github
Offline Reck

Senior Newbie





« Reply #5 - Posted 2012-11-30 21:52:25 »

You first have to create the ArrayList:

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testList = new ArrayList<String>();


EDIT: @Regenuluz:
Muhahaha! Cheesy
My Error-finding eye jumps in. At first I thought you'd be faster at reporting the error Grin

Obiously! I guess i've been looking for too long at this code. :-D Thank you!
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