How can you put a collection in a file?

[briley]

public static void main(String[] args) throws FileNotFoundException, IOException {
    String s;
    String s2;
    Scanner input = new Scanner(new File("C:\\qq.txt"));
    s = input.nextLine();
    s2 = input.nextLine();

    List<String> l1 = Arrays.asList(s.split(""));
    List<String> l2 = Arrays.asList(s2.split(""));
    Set<String> result = new LinkedHashSet<>();
    result.addAll(l1);
    result.addAll(l2);
    result.retainAll(l1);
    result.retainAll(l2);
    System.out.println(result);
}

Here's the code for Java. He's turning the results into a program, how can it be possible to make a withdrawal in .txt?

[Nykeriab]

Replace. System.out.println(result); to the next code and you'll get a similar conclusion to the file. out.txt For consoles:

        try(FileWriter writer = new FileWriter("C:\\out.txt")) {
            writer.write(result.toString());
            writer.flush();
        }

If you need to put the collection elements in the file fast, use the cycle:

        try(FileWriter writer = new FileWriter("C:\\out.txt")) {
            for (String s : set)
                writer.write(s + '\n');
            writer.flush();
        }