public void vytvorConnection() {
        String username ="student";
        String password ="Baterie15";
        String url ="jdbc:sqlserver://dbs.pf.jcu.cz;databaseName=TVUJ_NAZEV_DB";
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            connection = DriverManager.getConnection(url, username,password);
        } catch (SQLException | ClassNotFoundException e) {
             System.err.println(e);
        }
    }



   public void dotaz(){
       try {
            String sql = "SELECT * FROM NazevTvojiTabulky";

            Statement stmt = connection.createStatement();
            ResultSet result = stmt.executeQuery(sql);
            while (result.next()) {
               // např. když tam bude sloupec Nazev tak: String nazev = result.getString("Nazev");
               // ....
            }
        } catch (SQLException e) {
            System.err.println(e);
        }
    }

// v kodu potom jen:

// vytvorConnection();
// dotaz();