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Thread: Convert ArrayList to multi-dimensional array

  1. #1
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    Question Convert ArrayList to multi-dimensional array

    I am having troubles to convert an ArrayList of Object data to a multi-d array. The code below is the pseudo code:

    Person p1 = new Person("Tim", 21);
    Person p2 = new Person("Sara", 23);
    Person p3 = new Person("Henry", 27);
     
    ArrayList<Person> people = new ArrayList();
    people.add(p1);
    people.add(p2);
    people.add(p3);
     
    Object[][] peopleArray;
     
    for(Person p: people)
    {
        //code to convert people ArrayList to peopleArray
    }

    Could anyone tell me how I could populate this array with the people's ArrayList?
    I need this array because I'm trying to create a JTable using it's constructor JTable([][])

    Thanks much appreciated


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    Super Moderator Norm's Avatar
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    Default Re: Convert ArrayList to multi-dimensional array

    Is this what you want:
    The data from the next object in the arraylist will go to the contents of a row in the array.
    On the row the data from the object goes into the columns of the row.
    You need to define what data goes in the columns of the row.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Convert ArrayList to multi-dimensional array

    Yes. The Person objects itself will be stored in the rows of the array, and the contents of the Person objects (such as Name, Age etc) will be stored each of the columns in the array.

    Thanks

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    Default Re: Convert ArrayList to multi-dimensional array

    Do you have the solution now?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Convert ArrayList to multi-dimensional array

    Yes I do. Thanks for your help

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