Java reading a file into an ArrayList?

Question

How do you read the contents of a file into an ArrayList in Java?

Here are the file contents:

cat
ho         


        

Answer 1

Here is an entire program example:

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

public class X {
    public static void main(String[] args) {
    File f = new File("D:/projects/eric/eclipseworkspace/testing2/usernames.txt");
        try{
            ArrayList lines = get_arraylist_from_file(f);
            for(int x = 0; x < lines.size(); x++){
                System.out.println(lines.get(x));
            }
        }
        catch(Exception e){
            e.printStackTrace();
        }
        System.out.println("done");

    }
    public static ArrayList get_arraylist_from_file(File f) 
        throws FileNotFoundException {
        Scanner s;
        ArrayList list = new ArrayList();
        s = new Scanner(f);
        while (s.hasNext()) {
            list.add(s.next());
        }
        s.close();
        return list;
    }
}