Como crear un metodo para consultar en una tabla de una base de datos

public void getUser(String username, String password) {
    try {
        Statement statement = connection.createStatement();
        ResultSet resultSet = statement.executeQuery("SELECT name, email FROM User WHERE username = '" + username + "' AND password = '" + password + "'");
        if (resultSet.next()) {
            String name = resultSet.getString("name");
            String email = resultSet.getString("email");
            System.out.println(name);
            System.out.println(email);
        }

    } catch (SQLException e) {
        e.printStackTrace();
    }
}