Solution: Logging Security Events

import java.util.logging.Logger;
import java.util.logging.Level;
import java.util.List;
record User(String username, String password) {}
public class LoginManager {
    // Initialize the logger using the class name
    private static final Logger logger = Logger.getLogger(LoginManager.class.getName());
    private static final List<User> VALID_USERS = List.of(
        new User("admin", "securePass"),
        new User("manager", "bankOps123")
    );
    public boolean login(String username, String password) {
        for (User user : VALID_USERS) {
            // Check if both username and password match
            if (user.username().equals(username) && user.password().equals(password)) {
                // Log success as informational
                logger.log(Level.INFO, "User " + username + " logged in successfully.");
                return true;
            }
        }
        // If we reach here, no match was found in the list
        // Log failure as a warning to highlight potential security issues
        logger.log(Level.WARNING, "Failed login attempt for user: " + username + ".");
        return false;
    }
    public static void main(String[] args) {
        LoginManager manager = new LoginManager();
        manager.login("admin", "securePass");   // Logs INFO
        manager.login("hacker", "wrong123");    // Logs WARNING
        manager.login("manager", "bankOps123");   // Logs INFO
    }
}