import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;

public class Main
{
private static String URL =
        "jdbc:mysql://localhost:3306/mydb?autoReconnect=true&useSSL=false&useLegacyDatetimeCode=false&serverTimezone=UTC";
private static String USERNAME = "Admin";
private static String PASSWORD = "1260035";

public static void main(String[] args)
{
    Connection connection = null;
    Driver driver;

    try
    {
        driver = new com.mysql.cj.jdbc.Driver();
        DriverManager.registerDriver(driver);
    }
    catch(SQLException e)
    {
        System.err.println("Драйвер не зарегистрировался");
    }

    try
    {
        connection = DriverManager.getConnection(URL,USERNAME,PASSWORD);
        if(!connection.isClosed())
        {
            System.out.println("Соединение установлено");
        }
    }
    catch(SQLException ex)
    {
        System.err.println("Соединение не установлено");
    }
    finally
    {
        if (connection != null) try {
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

}
}