Scanner: hasNextLine()

import java.io.File;
import java.util.Scanner;

public class Main {
  public static void main(String[] args) throws Exception{
    File file = new File("data.txt");

    Scanner scanner = new Scanner(file);
    while (scanner.hasNextLine()) {
      String line = scanner.nextLine();
      System.out.println(line);
    }
  }
}