How do I replace an item in an array in an arraylist?

Question

I have an ArrayList, initialized as follows:

    public static List<int[]> items = new ArrayList<int[]>();

I add items to it like this:

    items.add(new int[] {2,0,1,0,1});

Can I change a specific entry on an array already on the ArrayList (for example: the 2 at index 0), or do I have to recreate the array every time with items.set()?

Luiggi Mendoza · Accepted Answer · 2015-08-16 22:55:50Z

3

You can do this:

int[] array = items.get(0);
array[0] = <new value>;

answered Aug 16, 2015 at 22:55

Luiggi Mendoza

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2 Comments

Luiggi Mendoza Over a year ago

I know. Writing it in two lines to make it explicit for OP how this works.

Caroline Collins Over a year ago

This is what I was looking for! Thank you.

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