Just a simple autoClose test

ReadFile.java

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Optional;
import java.util.Scanner;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class ReadFile {

  private static final long HEAD_LINES = 3;

  public static void main(String[] args) {
    final Scanner scanner = new Scanner(System.in);
    do {
      System.out.print("Input text file absolute name(Press Ctrl+C to exit): ");
      final String nextLine = scanner.nextLine();
      System.out.println(nextLine);
      final Path path = Paths.get(nextLine);
      if (path.toFile().exists()) {
        System.out.println(path + " is exist, try to read it as text file");
        if (isCloseMode(args)) {
          System.out.println("read first " + HEAD_LINES + "lines with close():");
          Optional.ofNullable(readWithClose(path, HEAD_LINES))
              .map(strings -> String.join("\n", strings))
              .ifPresent(System.out::println);

        } else {
          System.out.println("read first " + HEAD_LINES + "lines without close():");
          Optional.ofNullable(readWithOutClose(path, HEAD_LINES))
              .map(strings -> String.join("\n", strings))
              .ifPresent(System.out::println);
        }
        System.out.println("\n==========\n==========");
      } else {
        System.out.println(path + " is not exist, try again!");
      }
    } while (scanner.hasNext());
  }

  private static boolean isCloseMode(String[] args) {
    return args != null && args.length > 0;
  }

  private static List<String> readWithOutClose(Path filePath, long headLines) {
    try {
      return Files.lines(filePath)
          .limit(headLines)
          .collect(Collectors.toList());
    } catch (IOException e) {
      System.err.println(String.format("read file '%s' failed: %s", filePath, e));
      return null;
    }
  }

  private static List<String> readWithClose(Path filePath, long headLines) {
    try (Stream<String> stream = Files.lines(filePath)) {
      return stream
          .limit(headLines)
          .collect(Collectors.toList());
    } catch (IOException e) {
      System.err.println(String.format("read file '%s' failed: %s", filePath, e));
      return null;
    }
  }

}