dispose method

I created a program where when I click a button another screen shows up but the only problem I'm having is the first screen isn't going away. I tried to use the dispose method but I come up with an error don't know why though.

Code:

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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class MainScreen extends JFrame
{
        private  JTextField field1;
        private JLabel label1;
        private JLabel label2;
        private JButton button1;
        private JButton button2;
        private JComboBox box1;
        private JLabel imageIcon;


        public MainScreen()
        {
                field1 = new JTextField("Welcome");
                setLayout(null);

                Dimension size1 = field1.getPreferredSize();
                //Dimension size2 = label1.getPreferredSize();

                //Build field1
                field1.setBounds(400, 15, 220, 75);
                field1.setBackground(new Color(0, 102, 102));
                field1.setFont(new Font("Times New Roman", 1, 24));
                field1.setEditable(false);
                add(field1);

                //Build button1
                button1 = new JButton("EXIT");
                button1.setBounds(400, 620, 220, 75);
                button1.setBackground(new Color(0, 0, 0));
                button1.setForeground(new Color(255, 0, 0));
                button1.addActionListener(new button1Listener());
                add(button1);

                //Build button2
                button2 = new JButton("Click To Enter");
                button2.setBounds(350, 300, 220, 75);
                button2.addActionListener(new button2Listener());
                add(button2);

                //Build label1
                label1 = new JLabel();
                label1.setIcon(new ImageIcon ("bible3.gif"));
                label1.setBounds(0, 15, 600, 600);
                add(label1);

                //Build label2
                label2 = new JLabel();
                label2.setIcon(new ImageIcon ("seed.jpg"));
                label2.setBounds(707, 100, 400, 400);
                add(label2);

                //Build ComboBox
                box1 = new JComboBox();
                box1.setModel(new DefaultComboBoxModel(new String[]
                {
                        "Gospel", "Raeggae", "Hip-Hop"
                }));
                box1.setBounds(700, 0, 89, 50);
                add(box1);

                setSize(1100, 770);
                setTitle("Main Screen");
                setBackground(new Color(204, 102, 0));
                setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                getContentPane().setBackground(new Color(204, 102, 0));





                setVisible(true);



        }

        private class button1Listener implements ActionListener
                                {
                                        public void actionPerformed(ActionEvent e)
                                        {
                                                System.exit(0);
                                        }

                                }
        private class button2Listener implements ActionListener
                                {
                                        public void actionPerformed(ActionEvent e)
                                        {
                                                MiddleScreen midScr = new MiddleScreen();
                                                midScr.setVisible(true);
                                                MainScreen.dispose();

                                        }

                                }








        public static void main(String[] args)
        {
                new MainScreen();
        }



}

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The error I'm getting is "non-static method dispose() can't be referenced from a static context MainScreen.dispose();"

Quote:

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Originally Posted by jumpman8947

The error I'm getting is "non-static method dispose() can't be referenced from a static context MainScreen.dispose();"

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Well, you're calling dispose as if it were a static method of MainScreen but there is no such method, is it? At least I cannot see you put one there.

There is a dispose method inherited over Jframe from Window though (I think I can recall). If so you could call it just by skipping the MainScreen prefix. But I don't know if calling dispose will actually solve your problem.