problema com detours.cpp

public static Connection getConnection() {
        Connection conn = null;
        
        try {
            Class.forName("org.postgresql.Driver");
            String url = "jdbc:postgresql://localhost/banco";
            String user = "postgres";
            String pass = "postdba";
            conn = DriverManager.getConnection(url,user,pass);
        }
        catch(Exception ex) {
            JOptionPane.showMessageDialog(null, ex.getMessage());
        }
        return conn;
    }