Java sorting ArrayList of String Array [duplicate]

Question

I have an ArrayList in the form ArrayList<String[]> table_list = new ArrayList<String[]>();

So for example table_list.get(0) would look like {"Title", "Yes", "No"}.

Now let's say I have a lot of titles and want tot sort those titles in my table alphabetically, what do I do? Collections.sort() does not seem to work.

Thanks.

Your list shouldn't contain string array but instance of your class like Book, or whatever it represent. It would be more readable and easier to work with. — Pshemo
– Pshemo, Commented May 20, 2018 at 14:23
"Collections.sort() does not seem to work." is strange since it is one of ways to solve the problem. If it doesn't work for you then possibly you are misusing it, or problem is placed somewhere deeper (maybe your arrays doesn't contain what you assume). To get better help (in case provided answer and linked duplicate still doesn't solve your problem) use edit option and provide minimal reproducible example which we could use to actually reproduce your problem along with description of what what problem is (error/exception/incorrect result vs expected result). — Pshemo
– Pshemo, Commented May 20, 2018 at 14:27

Ousmane D. · Accepted Answer · 2018-05-20 14:20:48Z

2

pass a custom comparator:

table_list.sort(Comparator.comparing(e -> e[0]));

answered May 20, 2018 at 14:20

Ousmane D.

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