Search lines in a text file

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class SearchTextLines {
    public static void main(String[] args) {
        String fileName = "input.txt";
        List<String> lines = new ArrayList<>();

        try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {
            String line;
            while ((line = br.readLine()) != null) {
                lines.add(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }

        Scanner input = new Scanner(System.in);
        boolean exit = false;

        while (!exit) {
            System.out.print("Enter a word or phrase (leave empty to exit): ");
            String searchText = input.nextLine();

            if (!searchText.isEmpty()) {
                for (String line : lines) {
                    if (line.contains(searchText)) {
                        System.out.println(line);
                    }
                }
            } else {
                exit = true;
            }
        }

        input.close();
    }
}