GuiSim

    List<String> rows = Files.readAllLines(Paths.get(fileName), StandardCharsets.UTF_8);
    String header = rows.remove(0);

    // You can then continue with your application logic
    int headerColumnCount = header.split(Constants.SEPERATOR_ESCAPED).length;
    for (String row : rows) {
        System.out.println(row);
    }

GuiSim

import java.util.function.Function;

import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;

public class LambdaMatcher<T> extends BaseMatcher<T>
{
    private final Function<T, Boolean> matcher;
    private final String description;