Close/Remove a frame and display another

Question

I have a frame with a JButton.
when the JButton is clicked i am displaying a new frame (By calling the instance of a GUI class).
Now i want to close/remove the old frame, once the new frame is displayed.
Can anybody help me out?
-Achyuth B

Answer 1

both are entirely different frames.
this is the first time i am doing Swings program. And I am not sure whether the way i am doing is correct or not.
Do tell me if there is a better approach.
this is my login screen class.
public class LoginScreen
     public static Container container; //i made this static so that i can call this from other class with out creating the object of class
     protected static JTextField txtLoginId, txtPassword; // made staic as i can access easly from other class
     public void createGUI()
          JFrame frame = new JFrame();
          container = frame.getContentPane();
          container.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          JPanel panel = new JPanel();
          panel =  createLogin();     //this panel displays a login id and password TextBoxs.
          c.gridx = 5;
          c.gridy = 6;
          c.anchor = GridBagConstraints.CENTER;
          container.add(panel, c);
          panel =  createdButtons(); //the submit button
          c.gridx = 5;
          c.gridy = 7;
          c.anchor = GridBagConstraints.PAGE_END;
          container.add(panel, c);
          frame.pack();
          frame.setLocation(190, 120);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.show();
     private JPanel createLogin()
          //create & return panel
     //other functions
}