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Thread: Array List question

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    Default Array List question

    Hey guys, I am using an arraylist for my rpg to store an inventory and one to store the persons name, place of origin, etc.. Anyway, I need to know of a way to be able to use those same array lists with the values stored in them in all of my classes, as I have one class where I am using the array to enter their name etc.. and another one where they are playing the game.

    The problem is that when I try to use the arraylist it gives me back null pointer exception or out of bounds etc.., meaning that there is nothing in the arraylist but I know for sure there is. Also if you do not mind, do you know how if there is a way after you load the arraylist if you are able to use that loaded array list? I know how to load, I just do not know how to use it afterwards.


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    Default Re: Array List question

    If you are getting exceptions, there's not much we can do unless you post an SSCCE demonstrating the problem and the full stack trace associated - what you've posted is very general and there's not much help we can give...except...
    am using an arraylist for my rpg to store an inventory and one to store the persons name, place of origin, etc..
    Sorry but this does not sound like a great design...create a class that wraps all this information and have a single list that contains references to objects of that class.

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    Default Re: Array List question

    So have a specific class for where they input all of their values? I have that, the only thing that has to be separate is the inventory as that will happen throughout the game, there is no point to have it in that same class, or is there? Couldn't I just keep it separate?

    What I really just need to know is how to use my arraylist in all of my classes that still includes the values that I have already imputed and placed in the array.

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    Default Re: Array List question

    I think I found a work around, it is not efficient at all I dont think. What I did was in my load values, I was able to have them input what file they wanted to load and in the start of the game they load their character which then allows it to read where they started off at. I think I am good now, I will figure out if I need more help later.

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    Default Re: Array List question

    That sounds OK. You might consider looking at the Properties class which makes it easy to load and save named properties in a file.

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