Java – Is ArrayList[][] possible? Code Answer

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ArrayList<Integer>[][] matrix = new ArrayList<Integer]>[sizeX][sizeY]();


ArrayList<Integer>[][] matrix = new ArrayList<Integer]>()[sizeX][sizeY];

don’t work, I’m starting to think that it’s not even possible to store ArrayLists in a matrix?


If you still want to use and array:

    ArrayList<Integer>[][] matrix = new ArrayList[1][1];
    matrix[0][0]=new ArrayList<Integer>();
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