How do I convert List of String array to nested list of type String? [duplicate]

Question

How do I convert List<String[]> to List<List<String>>?

List<String[]> allData = csv.readAll();

allData needs to be coverted in List<List<String>>.

Youcef LAIDANI · Accepted Answer · 2023-01-05 09:05:38Z

2

You can use stream and Arrays::asList which will convert String[] to a List<String>, like this:

List<List<String>> response = allData.stream()
        .map(Arrays::asList)
        .collect(Collectors.toList()); // or just .toList();

answered Jan 5, 2023 at 9:05

Youcef LAIDANI

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