What does the following Java code output when "example.txt" contains "Hello!\n" followed by "Goodbye!"?

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class Main {
    public static void main(String[] args) {
        try (BufferedReader reader = new BufferedReader(new FileReader("example.txt"))) {
            System.out.println(reader.readLine());
        } catch (IOException e) {
            System.out.println("Error");
        }
    }
}