i bulid library management system and i use two button to connect two frame use homepage button to go to homepage frame then use back button go back to menu

i use this method is work for homepage button but when i use same method not work for back button i change my homepage public static void main to plz help me to figure out method work for two button (this is java program use eclipse)

JButton btnNewButton new JButton( "Homepage"); btnNewButton.addActionListener(new ActionListener) public void actionPerformed (ActionEvent arge) frame.dispose) Homepage sc- new Homepage); sc Screen)