Read CSV files into List of int arrays in Java 8

ReadFileClass.java

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.ArrayList;

public class ReadFileClass {

    public static void main(String args[]) {

        String fileName = "input.txt";
        List<int[]> B = new ArrayList<>();
        try (Stream<String> stream = Files.lines(Paths.get(fileName))) {
            B = stream.map(line -> line.split(", ")).map(str -> Stream.of(str).mapToInt(Integer::parseInt).toArray()).collect(Collectors.toList());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}