import java.io.*;
import java.util.LinkedHashSet;
import java.util.Scanner;

public class name2 {
    public static void main(String[] args) {
        chooseInputMethod();
        String input = chooseMethod();
        String resolve = chooseWayToResolve(input);
        createOutput(resolve);
    }

    private static String chooseWayToResolve(String input) {
        String resolve;
        if (input.equals("1")) {
            readConsole();
            String process = scan();
            LinkedHashSet<String> set = createSet(process);
            resolve = set.toString();
        } else {
            readPath();
            String process = scan();
            process = readFile(process);
            LinkedHashSet<String> set = createSet(process);
            resolve = set.toString();
        }
        return resolve;
    }

    private static String scan() {
        Scanner scanner = new Scanner(System.in);
        return scanner.nextLine();
    }

    private static void chooseInputMethod() {
        System.out.println("Chose input method");
        System.out.println("Console - write 1");
        System.out.println("File - write 0");
    }

    private static String chooseMethod() {
        Scanner scan = new Scanner(System.in);
        boolean isNotCorrect;
        String choice;
        do {
            isNotCorrect = false;
            choice = scan.nextLine();
            if ((!choice.equals("0")) && (!choice.equals("1"))) {
                System.out.println("Incorrect input method. Try again");
                isNotCorrect = true;
            }
        } while (isNotCorrect);
        return choice;
    }

    private static void readConsole() {
        System.out.println("Enter your text: ");
    }

    private static void readPath() {
        System.out.println("Enter file path: ");
    }

    private static void readNewPath() {
        System.out.println("Incorrect Path! Try again: ");
    }

    private static String readFile(String path) {
        String data = "";
        File file = new File(path);
        try {
            Scanner scanner = new Scanner(file);
            while (scanner.hasNextLine()) {
                data = scanner.nextLine();
            }
            scanner.close();
        } catch (FileNotFoundException e) {
            readNewPath();
            String newData = scan();
            data = readFile(newData);
        }
        return data;
    }

    private static void createOutput(String read) {
        System.out.println(read);
    }

    private static LinkedHashSet<String> createSet(String line) {
        LinkedHashSet<String> set = new LinkedHashSet<>();
        for (int i = 0; i < line.length(); i++) {
            if (line.charAt(i) > (char) 41 && line.charAt(i) < (char) 58) {
                set.add(line.charAt(i) + " ");
            }
        }
        return set;
    }
}