package testPackage;

import java.io.File;
import java.io.IOException;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class test {

	public static List<String> readFile(String filename) throws IOException {

		Scanner sc = new Scanner(new File(filename + ".txt"));
		List<String> lines = new ArrayList<String>();
		while (sc.hasNextLine()) {
		  lines.add(sc.nextLine());
		}
		return lines;
	}
}

------------------------------------second class---------------------------------------------------
package testPackage;

import java.io.IOException;
import java.util.List;

public class TestResult {

	public static void main(String[] args) throws IOException {

		List<String> arr = test.readFile("test");

		 System.out.println(arr.get(0)); //returns string1
		 System.out.println(arr.get(0)); // returns a blank?

		for (String el : arr) {
			System.out.println(el); // returns String1 ->nextline>blank>nextline>String2>nextline>blank>nextline>String3>nextline>blank
		}
	}

}