MySQL на меня ругается )

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
 
public class Main {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        Class.forName("com.mysql.jdbc.Driver");
        Connection conn = null;
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/Guest_Book", "root", "kava6anga123");
        conn.close();
    }
}

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
public class MySQLConn {
    private final String URL = "jdbc:mysql://localhost:3306/Guest_Book?autoReconnect=true&userSSL=false";
    private final String USERNAME = "root";
    private final String PASSWORD = "kava6anga123";
    private Connection connection;
    public Connection getConnection() throws SQLException {
        Properties properties = new Properties();
        properties.setProperty("user", USERNAME);
        properties.setProperty("password", PASSWORD);
        properties.setProperty("useUnicode", "true");
        properties.setProperty("characterEncoding", "utf8");
        if (connection == null || connection.isClosed()) {
            connection = DriverManager.getConnection(URL, properties);
        }
        return connection;
    }
}

import java.sql.SQLException;
public class Main {
    public static void main(String[] args) throws SQLException {
        MySQLConn conn = new MySQLConn();
        conn.getConnection();
    }
}