How do i save each line of the file to an Array?

Question

I tried the method posted below but still no success. I get an error of cannot find symbol. How else can i modify the code below. Do i have to place the line in the bottom?

import java.util.Scanner;
import java.io.*;
import java.util.Arrays;
/**
 * Write a description of class lab8 here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class lab8
{
     public static void main(String[] args) throws IOException
   {
   FileInputStream fileIn = new FileInputStream("haikuFun.txt");
   Scanner scrn = new Scanner(fileIn);
   String[] lines = fileIn.readAllLines(new File("haikuFun.txt").toPath());
   while(scrn.hasNext()) {
     String s = scrn.nextLine();
     System.out.println(s);
    }

  }
}

My instructor hasnt taught us how to use an Array list. I really cant use that — Needyboy, Feb 26 '19 at 03:35
Possible duplicate of [Read text file into an array](https://stackoverflow.com/questions/10257981/read-text-file-into-an-array) — cgcgbcbc, Feb 26 '19 at 03:36

score 3 · Answer 1 · answered Feb 26 '19 at 03:34

3

I would use Files.readAllLines(Path) like

String[] lines = Files.readAllLines(new File("haikuFun.txt").toPath());

answered Feb 26 '19 at 03:34

Elliott Frisch

198,278
20
158
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score 1 · Answer 2 · answered Feb 26 '19 at 03:36

1

Simple one line solution using Java 8

String[] lines = Files.lines(Paths.get("somefile.txt")).toArray(String[]::new);

answered Feb 26 '19 at 03:36

Jaspreet Jolly

1,235
11
26

I am sorry but what is "Paths" used for – Needyboy Feb 26 '19 at 03:43
I tried to use it and it shows an error which is "cannot find symbol - variable Paths – Needyboy Feb 26 '19 at 03:44
use import java.nio.file.Paths; It is a java class – Jaspreet Jolly Feb 26 '19 at 04:00
Hey now i am getting a error stating that "toArray" is not applicable – Needyboy Feb 26 '19 at 04:07

Oleg Cherednik · Answer 3 · 2019-02-26T04:18:47.597

0

I would use Files.readAllLines(Path) like

String[] lines = Files.readAllLines(Paths.get("haikuFun.txt"));

But in case you have a huge file, you could have a problem. In this case, you could use Stream:

try (Stream<String> stream = Files.lines(Paths.get("haikuFun.txt"))) {
    stream.forEach(line -> System.out.println(line));
} catch(IOException e) {
    e.printStackTrace();
}

edited Feb 26 '19 at 04:18

answered Feb 26 '19 at 03:56

Oleg Cherednik

17,377
4
21
35

How do i save each line of the file to an Array?

3 Answers3