Table header disappearing

Question

I've been scratching my heads for hours and still can't understand why this is happening. I have two JDialog. One to display the table, let's call it Dialog 1, and the other to display the row details, Dialog 2. When Dialog 2 displays on top of the table headers and you close the dialog, the column headers seems to disappear. I've checked and rechecked the code to see if there's anything funky but I can't see any problems with this. The code is displayed below.
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.SQLException;
import java.util.ArrayList;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
* Created on Mar 2, 2004
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
* @author Administrator
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
class PaymentTypeSetupDialog extends JDialog {
     private JTable paymentTable;
     private PaymentTypeListTableModel paymentModel;
     private JTextField lookup;
     private JRadioButton byCode, byAcctCode, byPaymentType;
     private ButtonGroup group;
     private JButton add, edit, delete;
     public PaymentTypeSetupDialog(JFrame parent) {
          super(parent, "Payment Setup", true);
          initialize();
          setSize(new Dimension(600, 400));
          setResizable(false);
          setVisible(true);
     public PaymentTypeSetupDialog(Dialog parent) {
          super(parent, "Payment Setup", true);
          initialize();
          setSize(new Dimension(600, 400));
          setResizable(false);
          setVisible(true);
     private void initialize() {
          Container pane = getContentPane();
          pane.add(paymentCtrls(), BorderLayout.NORTH);
          pane.add(paymentList(), BorderLayout.CENTER);
          pane.add(paymentLookup(), BorderLayout.SOUTH);
     private JToolBar paymentCtrls() {
          final JSeparator sep = new JSeparator(JSeparator.VERTICAL);
          sep.setPreferredSize(new Dimension(20, 20));
          JToolBar bar = new JToolBar();
          bar.setLayout(new FlowLayout(FlowLayout.LEFT, 4, 4));
          bar.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.GRAY));
          bar.setFloatable(false);          
          bar.setRollover(true);
          add = new JButton("Add", new ImageIcon("images/Add16.gif"));
          add.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    PaymentType payment = new PaymentType();
                    PaymentDetails dialog = new PaymentDetails(PaymentTypeSetupDialog.this, payment, true);
                    if (!payment.getPaymentID().equals("")) {
                         insertTableRow(payment);
               private void insertTableRow(PaymentType payment) {
                    int index = paymentTable.getSelectedRow();
                    int size = paymentTable.getRowCount();
                    ArrayList data = new ArrayList();
                    data.add(new Boolean(payment.isEnabled()));
                    data.add(payment.getPaymentID());
                    data.add(payment.getAccountID());
                    data.add(payment.getPaymentType());
                    // if no selection or if item in last position is selected.
                    // add the new one to the end of the list, and select new one.
                    if (index == -1 || index+1 == size) {
                         paymentModel.addNewRow(size, data);
                         paymentTable.getSelectionModel().setSelectionInterval(size, size);
                    } else {
                         paymentModel.addNewRow(index, data);
                         paymentTable.getSelectionModel().setSelectionInterval(index+1, index+1);
          add.setEnabled(true);          
          add.setFocusable(false);
          bar.add(add);
          edit = new JButton("Edit", new ImageIcon("images/Edit16.gif"));
          edit.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    int row = paymentTable.getSelectedRow();
                    final PaymentType payment = new PaymentType();
                    payment.setPaymentID(paymentTable.getValueAt(row, 1).toString());
                    try {
                         DBPaymentType.getPaymentType(payment);
                    } catch (SQLException sqle) {
                         // TODO Auto-generated catch block
                         sqle.printStackTrace();
                    PaymentDetails dialog = new PaymentDetails(PaymentTypeSetupDialog.this, payment, false);
                    if (!payment.getPaymentID().equals("")) {
                         ArrayList data = new ArrayList();
                         data.add(new Boolean(payment.isEnabled()));
                         data.add(payment.getPaymentID());
                         data.add(payment.getAccountID());
                         data.add(payment.getPaymentType());
                         paymentModel.updateRow(row, data);
          edit.setEnabled(false);          
          add.setFocusable(false);
          bar.add(edit);
          delete = new JButton("Delete", new ImageIcon("images/Delete16.gif"));
          delete.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    int selection = JOptionPane.showConfirmDialog(PaymentTypeSetupDialog.this, "Are you sure you want to remove this payment type?");
                    if (selection == 0) {
                         int row = paymentTable.getSelectedRow();
                         int size = paymentTable.getRowCount();     
                         if (size == 0) { // Nobody left
                              edit.setEnabled(false);
                              delete.setEnabled(false);
                         } else {
                              PaymentType payment = new PaymentType();
                              payment.setPaymentID(paymentTable.getValueAt(row, 1).toString());
                              try {
                                   DBPaymentType.removePaymentType(payment);
                                   paymentModel.removeRow(row);
                                   if (row+1 == size) {                              
                                        row--;
                                   paymentTable.getSelectionModel().setSelectionInterval(row, row);
                              } catch (SQLException e1) {
                                   // TODO Auto-generated catch block
                                   e1.printStackTrace();
          delete.setEnabled(false);
          delete.setFocusable(false);
          bar.add(delete);
          bar.add(sep);
          JButton btn = new JButton("Exit", new ImageIcon("images/Stop16.gif"));
          btn.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    dispose();
          btn.setFocusable(false);
          bar.add(btn);
          return bar;
     private JScrollPane paymentList() {
          paymentModel = new PaymentTypeListTableModel();
          paymentTable = new JTable(paymentModel);
          paymentTable.setFocusable(false);
          paymentTable.setCellSelectionEnabled(false);
          paymentTable.setRowHeight(20);
          paymentTable.setSelectionBackground(Color.yellow);
          paymentTable.setSelectionForeground(Color.black);
          paymentTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
          paymentTable.getTableHeader().setReorderingAllowed(false);
          paymentTable.getTableHeader().setResizingAllowed(false);
          paymentTable.getColumnModel().getColumn(0).setPreferredWidth(50);     
          paymentTable.getColumnModel().getColumn(1).setPreferredWidth(50);
          paymentTable.getColumnModel().getColumn(2).setPreferredWidth(50);
          paymentTable.getColumnModel().getColumn(3).setPreferredWidth(200);
          paymentTable.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
               public void valueChanged(ListSelectionEvent e) {
                    if (paymentTable.getRowCount() > 0) {
                         if (!edit.isEnabled())
                              edit.setEnabled(true);
                         if (!delete.isEnabled())
                              delete.setEnabled(true);
                    } else {
                         edit.setEnabled(false);
                         delete.setEnabled(false);
          paymentTable.addMouseListener(new MouseAdapter() {
               public void mouseClicked(MouseEvent e) {
                    if (e.getClickCount() == 2 && e.getButton() == 1) {
                         int row = paymentTable.getSelectedRow();
                         final PaymentType payment = new PaymentType();
                         payment.setPaymentID(paymentTable.getValueAt(row, 1).toString());
                         try {
                              DBPaymentType.getPaymentType(payment);
                         } catch (SQLException sqle) {
                              // TODO Auto-generated catch block
                              sqle.printStackTrace();
                         PaymentDetails dialog = new PaymentDetails(PaymentTypeSetupDialog.this, payment, false);
                         if (!payment.getPaymentID().equals("")) {
                              ArrayList data = new ArrayList();
                              data.add(new Boolean(payment.isEnabled()));
                              data.add(payment.getPaymentID());
                              data.add(payment.getAccountID());
                              data.add(payment.getPaymentType());
                              paymentModel.updateRow(row, data);
          JScrollPane scroll = new JScrollPane(paymentTable, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,       
               JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
          scroll.setCorner(JScrollPane.UPPER_RIGHT_CORNER,paymentTable.getTableHeader());
          scroll.getViewport().setBackground(Color.white);
          return scroll;
     private JPanel paymentLookup() {
          JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEFT, 2, 2));
          panel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
          group = new ButtonGroup();
          panel.add(new JLabel("Search"));
          lookup = new JTextField(20);
          lookup.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    if (lookup.getText().equals("")) {
                         JOptionPane.showMessageDialog(PaymentTypeSetupDialog.this, "Look up value is empty.");
                    } else {
                         int col;
                         if (byCode.isSelected()) {
                              col = 1;
                         } else if (byAcctCode.isSelected()) {
                              col = 2;
                         } else {
                              col = 3;
                         int index = paymentModel.getIndexFor(col, lookup.getText());
                         if (index != -1) {
                              paymentTable.getSelectionModel().setSelectionInterval(index, index);
          panel.add(lookup);
          byCode = new JRadioButton("Code");
          byCode.setSelected(true);
          byCode.setFocusable(false);
          group.add(byCode);
          panel.add(byCode);
          byAcctCode = new JRadioButton("Account code");
          byAcctCode.setSelected(true);
          byAcctCode.setFocusable(false);
          group.add(byAcctCode);
          panel.add(byAcctCode);
          byPaymentType = new JRadioButton("Payment type");
          byPaymentType.setFocusable(false);
          group.add(byPaymentType);
          panel.add(byPaymentType);
          return panel;
     public void setVisible(boolean visible) {
          if (visible) {
               Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
               Dimension size = getSize();
               int x;
               int y;
               x = screenSize.width / 2 - size.width / 2;
               y = screenSize.height / 2 - size.height / 2;
               setBounds(x, y, size.width, size.height);               
          super.setVisible(visible);
     class PaymentDetails extends JDialog {
          private PaymentType payment;
          private boolean newPayment;
          private JTextField code, type, image, imageUrl;
          private JComboBox accountList;
          private JCheckBox isEnabled;
          private JLabel paymentImage;
          public PaymentDetails(Dialog parent, PaymentType payment, boolean newPayment) {
               super(parent, "Payment Details", false);
               this.payment = payment;
               this.newPayment = newPayment;
               initialize();
               pack();
               setVisible(true);
          private void initialize() {
               Container pane = getContentPane();
               pane.add(paymentDetails(), BorderLayout.CENTER);
               pane.add(detailCtrls(), BorderLayout.SOUTH);
          private JPanel paymentDetails() {
               JPanel panel = new JPanel(new GridBagLayout());
               panel.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
               GridBagConstraints gbc = new GridBagConstraints();
               gbc.anchor = GridBagConstraints.WEST;
               gbc.fill = GridBagConstraints.NONE;
               gbc.insets = new Insets(4, 2, 4, 2);
               JLabel label;
               gbc.gridx = 0;
               gbc.gridy = 0;
               gbc.weightx = 0;
               label = new JLabel("Code");
               panel.add(label, gbc);
               gbc.gridx++;
               gbc.weightx = 1;
               code = new JTextField(payment.getPaymentID(), 10);
               code.setEditable(newPayment);
               panel.add(code, gbc);
               gbc.gridx++;
               isEnabled = new JCheckBox("Activate", payment.isEnabled());
               panel.add(isEnabled, gbc);
               gbc.gridx = 0;
               gbc.gridy++;
               gbc.fill = GridBagConstraints.HORIZONTAL;
               label = new JLabel("Account code");
               panel.add(label, gbc);
               gbc.gridx++;
               gbc.weightx = 1;
               gbc.gridwidth = 2;
               accountList = new JComboBox(new AccountTypeListModel(payment.getAccountID()));
               panel.add(accountList, gbc);
               gbc.gridx = 0;
               gbc.gridy++;
               gbc.gridwidth = 1;
               label = new JLabel("Payment Type");
               panel.add(label, gbc);
               gbc.gridx++;
               gbc.weightx = 1;
               gbc.gridwidth = 2;
               type = new JTextField(payment.getPaymentType(), 20);
               panel.add(type, gbc);
               gbc.gridx = 0;
               gbc.gridy++;
               gbc.gridwidth = 1;
               label = new JLabel("Image");
               panel.add(label, gbc);
               gbc.gridx++;
               gbc.weightx = 1;
               gbc.gridwidth = 2;
               panel.add(paymentImage(), gbc);
               gbc.gridx = 0;
               gbc.gridy++;
               gbc.gridwidth = 1;
               label = new JLabel("Image URL");
               panel.add(label, gbc);
               gbc.gridx++;
               gbc.fill = GridBagConstraints.NONE;
               imageUrl = new JTextField(payment.getImage(), 10);
               panel.add(imageUrl, gbc);
               gbc.gridx++;
               JButton btn = new JButton("Browse");
               btn.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         System.out.println("Browse image directory");
               panel.add(btn, gbc);
               return panel;
          private JScrollPane paymentImage() {
               paymentImage = new JLabel(new ImageIcon("images/Category48.gif"));
               JScrollPane scroll = new JScrollPane(paymentImage, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,       
                    JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
               scroll.setCorner(JScrollPane.UPPER_RIGHT_CORNER,paymentTable.getTableHeader());
               scroll.getViewport().setBackground(Color.white);
               scroll.setPreferredSize(new Dimension(200, 200));
               return scroll;
          private JPanel detailCtrls() {
               JPanel panel = new JPanel();
               JButton btn = new JButton("Save");
               btn.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         if (code.getText().equals("")) {
                              JOptionPane.showMessageDialog(PaymentDetails.this, "Code cannot be empty.");
                         } else {
                              payment.setPaymentID(code.getText());
                              payment.setAccountID(((AccountType) accountList.getSelectedItem()).getAccountID());
                              payment.setPaymentType(type.getText());
                              payment.setImage(imageUrl.getText());
                              payment.setEnabled(isEnabled.isSelected());
                              if (newPayment) {
                                   try {
                                        DBPaymentType.addPaymentType(payment);
                                        dispose();
                                   } catch (SQLException e1) {
                                        // TODO Auto-generated catch block
                                        e1.printStackTrace();
                              } else {
                                   try {
                                        DBPaymentType.updatePaymentType(payment);
                                        dispose();
                                   } catch (SQLException e1) {
                                        // TODO Auto-generated catch block
                                        e1.printStackTrace();
               panel.add(btn);
               btn = new JButton("Cancel");
               btn.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         payment.setPaymentID("");
                         dispose();
               panel.add(btn);
               return panel;
          public void setVisible(boolean visible) {
               if (visible) {
                    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
                    Dimension size = getSize();
                    int x;
                    int y;
                    x = screenSize.width / 2 - size.width / 2;
                    y = screenSize.height / 2 - size.height / 2;
                    setBounds(x, y, size.width, size.height);               
               super.setVisible(visible);
}Please help!
Thx.

Answer 1

Hmmm...Interesting. If you add paymentTable.updateUI(); after any edits or adds, the whole column headers disappear. It only seems to happen when the 2nd modal dialog is on top of the column header. If it is not, the application works fine. I've tested this against 1.4.2 and 1.5 beta and it i get the same result.