Swing gui disappeared

Question

I am working on a simple GUI with options to add,remove,write to disk etc.. While i was coding my program i came to a problem where the GUI start to disappear and opening only blank frame in the design tab/editor(also in run time), i tried to undo multiple times and it was coming back but this time i am to a point where i cannot do undo anymore. I posted all the code i have. What could be the solution to this problem ?

   package nikola.lozanovski.bitola;
    import java.awt.EventQueue;
    import java.awt.Font;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.util.Hashtable;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    import javax.swing.border.EmptyBorder;
    public class VozenRed extends JFrame {
        public VozenRed() {
        }
        /**
         * 
         */
        private static final long serialVersionUID = 1L;
        private JPanel contentPane;
        private JButton Delete;
        private JButton Transporter;
        private JTextField IdBox;
        private JTextField InitialBox;
        private JTextField FinalBox;
        private JTextField Hbox;
        private JTextField PriceBox;
        private JTextField AgencyBox;
        private JTextField SaveBox;
        private JTextField Mbox;
        private JTextField DeleteBox;
        private JTextField DestinationsBox;
        /**
         * Launch the application.
         */
        public static void main(String[] args) {
            EventQueue.invokeLater(new Runnable() {
                public void run() {
                    try {
                        VozenRed frame = new VozenRed();
                        frame.setVisible(true);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            });
        }
        /**
         * Create the frame.
         * @return 
         */
        public void pishi(){ //tried deleting from here
        Hashtable<Broj, Elementi> h1=new Hashtable<Broj, Elementi>();
                try
                {
                Broj B=new Broj(IdBox.getText());
                Elementi elem=new Elementi(InitialBox.getText(), FinalBox.getText(), Hbox.getText(), Mbox.getText(), PriceBox.getText(), AgencyBox.getText());
                h1.put(B , elem);
                }
                catch(Exception e)//i tried NullPointerException still the same
                {
                    System.out.println("asd");//not realy what i meant
                }
        } //deleting to here, still no frame
        public void VozenRed1() {
            setTitle("Transport me");
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setBounds(100, 100, 502, 396);
            contentPane = new JPanel();
            contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
            setContentPane(contentPane);
            contentPane.setLayout(null);

            JButton InitialDestination = new JButton("Initial Destination");
            InitialDestination.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Input the initial destination, I.E. My Home", "Initial Destination", 2);
                }
            });
            InitialDestination.setBounds(255, 63, 194, 23);
            contentPane.add(InitialDestination);

            JButton FinalDestination = new JButton("Final Destination");
            FinalDestination.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Input final destination, I.E. Your Home", "Final Destination", 2);
                }
            });
            FinalDestination.setBounds(255, 97, 194, 23);
            contentPane.add(FinalDestination);

            JButton TimeDeparture = new JButton("Departure Time");
            TimeDeparture.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Input time, Hours in first box, Minutes in second box, I.E. 00:00", "Departure Time", 2);
                }
            });
            TimeDeparture.setBounds(255, 128, 194, 23);
            contentPane.add(TimeDeparture);

            JButton TicketPrice = new JButton("Ticket Price");
            TicketPrice.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null,"Input price, digits only, I.E. 100","TicketPrice",2);
                }
            });
            TicketPrice.setBounds(255, 159, 194, 23);
            contentPane.add(TicketPrice);

            Transporter = new JButton("Transport Agency");
            Transporter.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null,"Input transporter name, I.E. MyTrans","Transporter",2);
                }
            });
            Transporter.setBounds(255, 190, 194, 23);
            contentPane.add(Transporter);

            JButton SaveRoute = new JButton("Save Route");
            SaveRoute.setBounds(255, 320, 194, 23);
            contentPane.add(SaveRoute);

            Delete = new JButton("Delete");
            Delete.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                }
            });
            Delete.setBounds(255, 286, 194, 23);
            contentPane.add(Delete);

            JButton Destinations = new JButton("Destinations");
            Destinations.setBounds(255, 252, 194, 23);
            contentPane.add(Destinations);

            JLabel InputLabel = new JLabel("Input Elements");
            InputLabel.setBounds(44, 11, 211, 14);
            contentPane.add(InputLabel);

            JLabel CommandsLabel = new JLabel("Additional Commands");
            CommandsLabel.setBounds(44, 222, 201, 14);
            contentPane.add(CommandsLabel);

            JButton IdentificationNumber = new JButton("Identification Number");
            IdentificationNumber.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent arg0) {
                    JOptionPane.showMessageDialog(null, "Enter Identification number , only numbers, I.E. 0123","IdentificationNumber", 2);
                }
            });
            IdentificationNumber.setBounds(255, 29, 194, 23);
            contentPane.add(IdentificationNumber);

            JButton ClearAll = new JButton("Clear All");
            ClearAll.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    IdBox.setText(null);
                    InitialBox.setText(null);
                    FinalBox.setText(null);
                    Hbox.setText(null);
                    Mbox.setText(null);
                    PriceBox.setText(null);
                    AgencyBox.setText(null);
                }
            });
            ClearAll.setFont(new Font("Tahoma", Font.BOLD, 11));
            ClearAll.setBounds(255, 218, 194, 23);
            contentPane.add(ClearAll);

            JLabel lblHelpButtons = new JLabel("Help Buttons");
            lblHelpButtons.setBounds(314, 11, 76, 14);
            contentPane.add(lblHelpButtons);

            JButton HelpDestinations = new JButton("");
            HelpDestinations.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Outputs Destinations in a new box","Destinations", 2);
                }
            });
            HelpDestinations.setBounds(459, 252, 17, 23);
            contentPane.add(HelpDestinations);

            JButton HelpDelete = new JButton("");
            HelpDelete.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Deletes selected Identification","Delete", 2);
                }
            });
            HelpDelete.setBounds(459, 286, 17, 23);
            contentPane.add(HelpDelete);

            JButton HelpSave = new JButton("");
            HelpSave.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Choose Directory to save","Save Document", 2);
                }
            });
            HelpSave.setBounds(459, 320, 17, 23);
            contentPane.add(HelpSave);

            JButton HelpClearAll = new JButton("");
            HelpClearAll.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    JOptionPane.showMessageDialog(null, "Clears all the boxes above","Clear All", 2);
                }
            });
            HelpClearAll.setBounds(459, 218, 17, 23);
            contentPane.add(HelpClearAll);

            JButton IdentificationHelpButton = new JButton("");
            IdentificationHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    IdBox.setText(null);
                }
            });
            IdentificationHelpButton.setBounds(10, 29, 17, 23);
            contentPane.add(IdentificationHelpButton);

            JButton InitialDestinationHelpButton = new JButton("");
            InitialDestinationHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    InitialBox.setText(null);
                }
            });
            InitialDestinationHelpButton.setBounds(10, 60, 17, 23);
            contentPane.add(InitialDestinationHelpButton);

            JButton FinalDestinationHelpButton = new JButton("");
            FinalDestinationHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent arg0) {
                    FinalBox.setText(null);
                }
            });
            FinalDestinationHelpButton.setBounds(10, 97, 17, 23);
            contentPane.add(FinalDestinationHelpButton);



            JButton DeparturetimeHelpButton = new JButton("");
            DeparturetimeHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    Hbox.setText(null);
                    Mbox.setText(null);
                }
            });
            DeparturetimeHelpButton.setBounds(10, 129, 17, 23);
            contentPane.add(DeparturetimeHelpButton);

            JButton TicketPriceHelpButton = new JButton("");
            TicketPriceHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    PriceBox.setText(null);
                }
            });
            TicketPriceHelpButton.setBounds(10, 159, 17, 23);
            contentPane.add(TicketPriceHelpButton);

            JButton TransporterHelpButton = new JButton("");
            TransporterHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    AgencyBox.setText(null);
                }
            });
            TransporterHelpButton.setBounds(10, 190, 17, 23);
            contentPane.add(TransporterHelpButton);

            JLabel label = new JLabel("        :");
            label.setBounds(113, 132, 39, 14);
            contentPane.add(label);

            JButton SaveDocumentButton = new JButton("");
            SaveDocumentButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    SaveBox.setText(null);
                }
            });
            SaveDocumentButton.setBounds(10, 320, 17, 23);
            contentPane.add(SaveDocumentButton);

            IdBox = new JTextField();


            IdBox.setBounds(44, 30, 201, 20);
            contentPane.add(IdBox);
            IdBox.setColumns(10);

            InitialBox = new JTextField();
            InitialBox.setColumns(10);
            InitialBox.setBounds(44, 64, 201, 20);
            contentPane.add(InitialBox);

            FinalBox = new JTextField();
            FinalBox.setColumns(10);
            FinalBox.setBounds(44, 98, 201, 20);
            contentPane.add(FinalBox);

            Hbox = new JTextField();
            Hbox.setColumns(10);
            Hbox.setBounds(44, 129, 86, 20);
            contentPane.add(Hbox);

            PriceBox = new JTextField();
            PriceBox.setColumns(10);
            PriceBox.setBounds(44, 160, 201, 20);
            contentPane.add(PriceBox);

            AgencyBox = new JTextField();
            AgencyBox.setColumns(10);
            AgencyBox.setBounds(44, 191, 201, 20);
            contentPane.add(AgencyBox);

            SaveBox = new JTextField();
            SaveBox.setColumns(10);
            SaveBox.setBounds(44, 321, 201, 20);
            contentPane.add(SaveBox);

            Mbox = new JTextField();
            Mbox.setColumns(10);
            Mbox.setBounds(145, 129, 100, 20);
            contentPane.add(Mbox);

            DeleteBox = new JTextField();
            DeleteBox.setColumns(10);
            DeleteBox.setBounds(44, 287, 201, 20);
            contentPane.add(DeleteBox);

            DestinationsBox = new JTextField();
            DestinationsBox.setColumns(10);
            DestinationsBox.setBounds(44, 253, 201, 20);
            contentPane.add(DestinationsBox);

            JButton DeleteHelpButton = new JButton("");
            DeleteHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    DeleteBox.setText(null);
                }
            });
            DeleteHelpButton.setBounds(10, 286, 17, 23);
            contentPane.add(DeleteHelpButton);

            JButton DestinationHelpButton = new JButton("");
            DestinationHelpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    DestinationsBox.setText(null);
                }
            });
            DestinationHelpButton.setBounds(10, 252, 17, 23);
            contentPane.add(DestinationHelpButton);

        }
    }

Answer 1

Looks like your code never calls all that UI stuff in VozenRed1().

You create the VozenRed object, which calls the empty constructor, then you set it to be visible. Never calling VozenRed1().

Answer 2

I think you've missed initComponents() in the constructor of your jframe.