关于#数据库#的问题，如何解决？

各位大 佬帮我看看什么问题？数据库驱动死活连不上，代码如图，怎么解决啊，急
不用回答不用回答

public class JDBCUtil {
    public static Connection getConnection() throws Exception {
//        InputStream is = ClassLoader.getSystemResourceAsStream("jdbc.properties");
//        Properties pros = new Properties();
//        pros.load(is);
//        String username = pros.getProperty("username");
//        String password = pros.getProperty("password");
//        String url = pros.getProperty("url");
//        String driverClass = pros.getProperty("driverClass");
        String username = "root";
        String password = "root";

        String driverClass = "com.mysql.cj.jdbc.Driver";
        //2.加载驱动
        Class.forName(driverClass);
        //3.获取连接
        Connection conn = DriverManager.getConnection(url, username, password);
        return conn;
    }
    //关闭数据库的连接
    public static void closeResource(Connection conn, Statement ps) {
        try {
            if(ps != null){
            ps.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        try {
            if(conn != null){
            conn.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
    //关闭数据库的连接
    public static void closeResource(Connection conn, Statement ps, ResultSet rs) {
        try {
            if(ps != null){
                ps.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        try {
            if(conn != null){
                conn.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        try {
            if(rs != null){
            rs.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

报什么错误呢，发出来看看