"Connection authentication failure occurred.  Reason: Userid or password invalid."



public static void CoLogin(String username, String password){
    try{
        String dbuser = "";
        String dbpass = "";
        String url = "jdbc:derby://localhost:1527/Java-App";
        String user = username;
        String pass = password;
        Connection con = DriverManager.getConnection(url, "admin", "admin");

        Statement stmt = con.createStatement();
        String SQL = "SELECT * FROM MEMBERS WHERE ID='" + user + "' && PASSWORD='" + pass + "'";
        ResultSet rs = stmt.executeQuery(SQL);

        while(rs.next()){
            dbuser= rs.getString("ID");
            dbpass = rs.getString("PASSWORD");
        }
        if(user.equals(dbuser) && pass.equals(dbpass)){
                 Main x = new Main();
                 x.setVisible(true);
        }
        else{
            Login x = new Login();
            x.setVisible(true);
        }

        //Connection con = DriverManager.getConnection(url, user,     pass);

    }
    catch(SQLException error){
        System.out.println(error.getMessage());
    }