Java Stream to String[] Array

Question

I'm reading from a CSV file with a structure like this:

1;Miller Hame; 1,2,3,4,5.....; 1232323;

I have to split it to String[], I could work with every line and there with every "Part"

My Code so far:

Stream<String> input = java.nio.file.Files.lines(java.nio.file.Paths.get("data.csv"));

String[] lines = input.skip(1)
        .map(s->s.split(";"))
        .toArray(String[]::new);

Actually I'm getting java.lang.ArrayStoreException.

(Yes, it's for homework, but I don't want the whole solution, only for this very small part of the work.)

@BoristheSpider yes, replacing .toArray(String[]::new); with .toArray(String[][]::new); should work. — Darshan Mehta
– Darshan Mehta, Commented Apr 22, 2017 at 16:47

djm.im · Accepted Answer · 2021-03-11 09:00:54Z

6

Something like this

Stream<String> input = Files.lines(Paths.get("src/data.csv"));

String[][] lines = input.skip(1)
        .map(s -> s.split(";"))
        .toArray(String[][]::new);

Advice: You don't have to type full path for a class. You can import it. This is for Files and Paths classes

import java.nio.file.Files;
import java.nio.file.Paths;

edited Mar 11, 2021 at 9:00

answered Apr 22, 2017 at 16:53

djm.im

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