How would i call this function in my main?

    private JFrame getMainpageframe1() {
    if (mainpageframe1 == null) {
        mainpageframe1 = new JFrame();
        mainpageframe1.setSize(new Dimension(315, 306));
        mainpageframe1.setContentPane(getMainpage());
        mainpageframe1.setTitle("Shopping For Less: Main Page");
        mainpageframe1.setVisible(true);
        mainpageframe1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    return mainpageframe1;
}

public static void main(String[] args) {        
   //call that function to output the JFrame?
}

thanks