Example usage for javax.swing JOptionPane WARNING

Introduction

In this page you can find the example usage for javax.swing JOptionPane WARNING_MESSAGE.

Prototype

int WARNING_MESSAGE

To view the source code for javax.swing JOptionPane WARNING_MESSAGE.

Click Source Link

Document

Used for warning messages.

Usage

From source file:gui.FeedbackGui.java

private void jButtonSendActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButtonSendActionPerformed

    boolean wasSent = false;

    if (this.jTextFieldFrom.getText().equals("")) {

        JOptionPane.showMessageDialog(this, this.langErrorInputFrom, this.langErrorInputTitle,
                JOptionPane.WARNING_MESSAGE);
    } else if (this.jTextAreaMessage.getText().equals("")) {

        JOptionPane.showMessageDialog(this, this.langErrorInputMessage, this.langErrorInputTitle,
                JOptionPane.WARNING_MESSAGE);
    } else {/*from w ww.ja  v a  2  s . co  m*/

        RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(10 * 1000).build();
        HttpClient httpclient = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).build();
        HttpPost httppost = new HttpPost("http://gw2eventer.sourceforge.net/feedback/");

        // Request parameters and other properties.
        List<NameValuePair> params = new ArrayList<NameValuePair>(5);

        params.add(new BasicNameValuePair("key", "jhk3h238kfh8k32r88hfk2h"));
        params.add(new BasicNameValuePair("date", new Date().getTime() + ""));
        params.add(new BasicNameValuePair("from", this.jTextFieldFrom.getText()));
        params.add(new BasicNameValuePair("subject", this.jTextFieldSubject.getText()));
        params.add(new BasicNameValuePair("message", this.jTextAreaMessage.getText()));

        try {
            httppost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
        } catch (UnsupportedEncodingException ex) {
            Logger.getLogger(FeedbackGui.class.getName()).log(Level.SEVERE, null, ex);
        }

        //Execute and get the response.
        HttpResponse response;

        try {

            response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();

            if (entity != null) {

                InputStream instream = entity.getContent();

                try {
                    wasSent = true;

                    BufferedReader rd = new BufferedReader(
                            new InputStreamReader(response.getEntity().getContent(), Charset.forName("UTF-8")));

                    String line = "";
                    String out = "";

                    while ((line = rd.readLine()) != null) {

                        out = out + line;
                    }

                    System.out.println(out);
                } finally {
                    instream.close();
                }
            }
        } catch (IOException | IllegalStateException ex) {
            Logger.getLogger(FeedbackGui.class.getName()).log(Level.SEVERE, null, ex);

            JOptionPane.showMessageDialog(this, this.langErrorSendMessage, this.langErrorSendTitle,
                    JOptionPane.WARNING_MESSAGE);
        } finally {

            if (wasSent) {
                this.setVisible(false);
            }
        }
    }
}

From source file:jamel.gui.JamelWindow.java

/**
 * Returns the info panel./*from  w ww . j a va  2 s.  com*/
 * @return the info panel.
 */
private Component getInfoPanel() {
    final JEditorPane editorPane = new JEditorPane("text/html", "<center>" + this.infoString + "</center>");
    editorPane.addHyperlinkListener(new HyperlinkListener() {
        public void hyperlinkUpdate(HyperlinkEvent e) {
            if (e.getEventType().equals(HyperlinkEvent.EventType.ACTIVATED))
                try {
                    java.awt.Desktop.getDesktop().browse(e.getURL().toURI());
                } catch (Exception ex) {
                    ex.printStackTrace();
                    JOptionPane.showMessageDialog(null,
                            "<html>" + "Error.<br>" + "Cause: " + e.toString() + ".<br>"
                                    + "Please see server.log for more details.</html>",
                            "Warning", JOptionPane.WARNING_MESSAGE);
                }
        }
    });
    editorPane.setEditable(false);
    final JScrollPane scrollPane = new JScrollPane(editorPane);
    return scrollPane;
}

From source file:net.sf.keystore_explorer.gui.actions.ExportKeyPairPrivateKeyAction.java

private void exportAsPvk(PrivateKey privateKey, String alias) throws CryptoException, IOException {
    File exportFile = null;//  ww  w  .  j a  v  a 2s.c  o  m

    try {
        DExportPrivateKeyPvk dExportPrivateKeyPvk = new DExportPrivateKeyPvk(frame, alias, privateKey,
                applicationSettings.getPasswordQualityConfig());
        dExportPrivateKeyPvk.setLocationRelativeTo(frame);
        dExportPrivateKeyPvk.setVisible(true);

        if (!dExportPrivateKeyPvk.exportSelected()) {
            return;
        }

        exportFile = dExportPrivateKeyPvk.getExportFile();
        int keyType = dExportPrivateKeyPvk.getKeyType();
        boolean encrypt = dExportPrivateKeyPvk.encrypt();

        boolean strongEncryption = false;
        Password exportPassword = null;

        if (encrypt) {
            strongEncryption = dExportPrivateKeyPvk.useStrongEncryption();
            exportPassword = dExportPrivateKeyPvk.getExportPassword();
        }

        byte[] encoded = getPvkEncodedPrivateKey(privateKey, keyType, exportPassword, strongEncryption);

        exportEncodedPrivateKey(encoded, exportFile);

        JOptionPane.showMessageDialog(frame,
                res.getString("ExportKeyPairPrivateKeyAction.ExportPrivateKeyPvkSuccessful.message"),
                res.getString("ExportKeyPairPrivateKeyAction.ExportPrivateKeyPvk.Title"),
                JOptionPane.INFORMATION_MESSAGE);
    } catch (FileNotFoundException ex) {
        String message = MessageFormat
                .format(res.getString("ExportKeyPairPrivateKeyAction.NoWriteFile.message"), exportFile);
        JOptionPane.showMessageDialog(frame, message,
                res.getString("ExportKeyPairPrivateKeyAction.ExportPrivateKeyPvk.Title"),
                JOptionPane.WARNING_MESSAGE);
    }
}

From source file:be.ac.ua.comp.scarletnebula.gui.windows.LinkUnlinkWindow.java

private final JPanel getMainPanel() {
    final JPanel mainPanel = new JPanel(new GridBagLayout());
    mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 0, 0, 0));
    final ServerList linkedServerList = new ServerList(linkedServerListModel);
    linkedServerList.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
    final JScrollPane linkedServerScrollPane = new JScrollPane(linkedServerList);
    linkedServerScrollPane//  w w w. ja v  a  2s .  com
            .setBorder(BorderFactory.createTitledBorder(new EmptyBorder(5, 20, 20, 20), "Linked Servers"));
    // Doesn't matter what this is set to, as long as it's the same as the
    // one for unlinkedServerScrollPane
    linkedServerScrollPane.setPreferredSize(new Dimension(10, 10));

    final GridBagConstraints c = new GridBagConstraints();

    c.fill = GridBagConstraints.BOTH;
    c.gridx = 0;
    c.gridy = 0;
    c.weightx = 0.5;
    c.weighty = 1.0;

    mainPanel.add(linkedServerScrollPane, c);

    final ServerList unlinkedServerList = new ServerList(unlinkedServerListModel);
    unlinkedServerList.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
    final JScrollPane unlinkedServerScrollPane = new JScrollPane(unlinkedServerList);
    unlinkedServerScrollPane
            .setBorder(BorderFactory.createTitledBorder(new EmptyBorder(5, 20, 20, 20), "Unlinked Servers"));

    // Doesn't matter what this is set to, as long as it's the same as the
    // one for unlinkedServerScrollPane
    unlinkedServerScrollPane.setPreferredSize(new Dimension(10, 10));

    final JPanel middlePanel = new JPanel();
    middlePanel.setLayout(new BoxLayout(middlePanel, BoxLayout.Y_AXIS));
    middlePanel.add(Box.createVerticalGlue());

    final JButton linkSelectionButton = new JButton("<");
    final JButton unlinkSelectionButton = new JButton(">");

    linkSelectionButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(final ActionEvent e) {
            // Move selection from unlinked to linked list
            final int selection = unlinkedServerList.getSelectedIndex();

            if (selection < 0) {
                return;
            }

            final Server server = unlinkedServerListModel.getVisibleServerAtIndex(selection);

            unlinkedServerListModel.removeServer(server);

            linkedServerListModel.addServer(server);
        }
    });

    unlinkSelectionButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(final ActionEvent e) {
            // Move selection from linked to unlinked list
            final int selection = linkedServerList.getSelectedIndex();

            if (selection < 0) {
                return;
            }

            final int answer = JOptionPane.showOptionDialog(LinkUnlinkWindow.this,
                    "You are about to unlink a server. "
                            + "Unlinking a server will permanently remove \nall data associated with "
                            + "this server, but the server will keep running. "
                            + "\n\nAre you sure you wish to continue?",
                    "Unlink Server", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE, null, null, null);

            if (answer != JOptionPane.YES_OPTION) {
                return;
            }

            final Server server = linkedServerListModel.getVisibleServerAtIndex(selection);

            linkedServerListModel.removeServer(server);

            unlinkedServerListModel.addServer(server);
        }
    });

    middlePanel.add(unlinkSelectionButton);
    middlePanel.add(Box.createVerticalStrut(10));
    middlePanel.add(linkSelectionButton);
    middlePanel.add(Box.createVerticalGlue());

    c.gridx = 1;
    c.gridy = 0;
    c.weightx = 0.0;
    c.weighty = 0.0;

    mainPanel.add(middlePanel, c);

    c.gridx = 2;
    c.gridy = 0;
    c.weightx = 0.5;
    c.weighty = 1.0;

    mainPanel.add(unlinkedServerScrollPane, c);
    return mainPanel;
}

From source file:dbseer.gui.actions.ExplainChartAction.java

private void updateExplanations() {
    JTextField confidenceThresholdTextField = panel.getControlPanel().getConfidenceThresholdTextField();
    if (!UserInputValidator.validateNumber(confidenceThresholdTextField.getText().trim(),
            "Confidence Threshold", true)) {
        return;/*from  w  w  w.j av  a2s.  co m*/
    }
    confidenceThreshold = Double.parseDouble(confidenceThresholdTextField.getText().trim());
    if (confidenceThreshold < 0 || confidenceThreshold > 100) {
        JOptionPane.showMessageDialog(null, "Confidence threshold must be between 1 and 100.", "Warning",
                JOptionPane.WARNING_MESSAGE);
        return;
    }

    SwingUtilities.invokeLater(new Runnable() {
        @Override
        public void run() {
            DefaultListModel explanationListModel = panel.getControlPanel().getExplanationListModel();
            explanationListModel.clear();

            int rank = 1;
            for (DBSeerCausalModel explanation : explanations) {
                if (explanation.getConfidence() > confidenceThreshold) {
                    String output = String.format("%d. %s\n", rank++, explanation.toString());
                    explanationListModel.addElement(output);
                }
            }
        }
    });
}

From source file:org.cds06.speleograph.graph.SeriesMenu.java

private JPopupMenu createPopupMenuForSeries(final Series series) {

    if (series == null)
        return new JPopupMenu();

    final JPopupMenu menu = new JPopupMenu(series.getName());

    menu.removeAll();/*from w  w w.  j  a  v  a2 s  .c  o m*/

    menu.add(new AbstractAction() {
        {
            putValue(NAME, "Renommer la srie");
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            menu.setVisible(false);
            String newName = "";
            while (newName == null || newName.equals("")) {
                newName = (String) JOptionPane.showInputDialog(application,
                        "Entrez un nouveau nom pour la srie", null, JOptionPane.QUESTION_MESSAGE, null, null,
                        series.getName());
            }
            series.setName(newName);
        }
    });

    if (series.hasOwnAxis()) {
        menu.add(new AbstractAction() {

            {
                putValue(NAME, "Supprimer l'axe spcifique");
            }

            @Override
            public void actionPerformed(ActionEvent e) {
                if (JOptionPane.showConfirmDialog(application, "tes vous sr de vouloir supprimer cet axe ?",
                        "Confirmation", JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION) {
                    series.setAxis(null);
                }
            }
        });
    } else {
        menu.add(new JMenuItem(new AbstractAction() {

            {
                putValue(NAME, "Crer un axe spcifique pour la srie");
            }

            @Override
            public void actionPerformed(ActionEvent e) {
                String name = JOptionPane.showInputDialog(application, "Quel titre pour cet axe ?",
                        series.getAxis().getLabel());
                if (name == null || "".equals(name))
                    return; // User has canceled
                series.setAxis(new NumberAxis(name));
            }
        }));
    }

    menu.add(new SetTypeMenu(series));

    if (series.isWater()) {
        menu.addSeparator();
        menu.add(new SumOnPeriodAction(series));
        menu.add(new CreateCumulAction(series));
    }
    if (series.isWaterCumul()) {
        menu.addSeparator();
        menu.add(new SamplingAction(series));
    }

    if (series.isPressure()) {
        menu.addSeparator();
        menu.add(new CorrelateAction(series));
        menu.add(new WaterHeightAction(series));
    }

    menu.addSeparator();

    menu.add(new AbstractAction() {
        {
            String name;
            if (series.canUndo())
                name = "Annuler " + series.getItemsName();
            else
                name = series.getLastUndoName();

            putValue(NAME, name);

            if (series.canUndo())
                setEnabled(true);
            else {
                setEnabled(false);
            }

        }

        @Override
        public void actionPerformed(ActionEvent e) {
            series.undo();
        }
    });

    menu.add(new AbstractAction() {
        {
            String name;
            if (series.canRedo()) {
                name = "Refaire " + series.getNextRedoName();
                setEnabled(true);
            } else {
                name = series.getNextRedoName();
                setEnabled(false);
            }

            putValue(NAME, name);
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            series.redo();
        }
    });

    menu.add(new AbstractAction() {
        {
            putValue(NAME, I18nSupport.translate("menus.serie.resetSerie"));
            if (series.canUndo())
                setEnabled(true);
            else
                setEnabled(false);
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            series.reset();
        }
    });

    menu.add(new LimitDateRangeAction(series));

    menu.add(new HourSettingAction(series));

    menu.addSeparator();

    {
        JMenuItem deleteItem = new JMenuItem("Supprimer la srie");
        deleteItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (JOptionPane.showConfirmDialog(application,
                        "tes-vous sur de vouloir supprimer cette srie ?\n"
                                + "Cette action est dfinitive.",
                        "Confirmation", JOptionPane.OK_CANCEL_OPTION,
                        JOptionPane.WARNING_MESSAGE) == JOptionPane.OK_OPTION) {
                    series.delete();
                }
            }
        });
        menu.add(deleteItem);
    }

    menu.addSeparator();

    {
        final JMenuItem up = new JMenuItem("Remonter dans la liste"),
                down = new JMenuItem("Descendre dans la liste");
        ActionListener listener = new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (e.getSource().equals(up)) {
                    series.upSeriesInList();
                } else {
                    series.downSeriesInList();
                }
            }
        };
        up.addActionListener(listener);
        down.addActionListener(listener);
        if (series.isFirst()) {
            menu.add(down);
        } else if (series.isLast()) {
            menu.add(up);
        } else {
            menu.add(up);
            menu.add(down);
        }
    }

    menu.addSeparator();

    {
        menu.add(new SeriesInfoAction(series));
    }

    {
        JMenuItem colorItem = new JMenuItem("Couleur de la srie");
        colorItem.addActionListener(new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                series.setColor(JColorChooser.showDialog(application,
                        I18nSupport.translate("actions.selectColorForSeries"), series.getColor()));
            }
        });
        menu.add(colorItem);
    }

    {
        JMenu plotRenderer = new JMenu("Affichage de la srie");
        final ButtonGroup modes = new ButtonGroup();
        java.util.List<DrawStyle> availableStyles;
        if (series.isMinMax()) {
            availableStyles = DrawStyles.getDrawableStylesForHighLow();
        } else {
            availableStyles = DrawStyles.getDrawableStyles();
        }
        for (final DrawStyle s : availableStyles) {
            final JRadioButtonMenuItem item = new JRadioButtonMenuItem(DrawStyles.getHumanCheckboxText(s));
            item.addChangeListener(new ChangeListener() {
                @Override
                public void stateChanged(ChangeEvent e) {
                    if (item.isSelected())
                        series.setStyle(s);
                }
            });
            modes.add(item);
            if (s.equals(series.getStyle())) {
                modes.setSelected(item.getModel(), true);
            }
            plotRenderer.add(item);
        }
        menu.add(plotRenderer);
    }
    menu.addSeparator();

    menu.add(new AbstractAction() {
        {
            putValue(Action.NAME, "Fermer le fichier");
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            if (JOptionPane.showConfirmDialog(application,
                    "tes-vous sur de vouloir fermer toutes les sries du fichier ?", "Confirmation",
                    JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE) == JOptionPane.OK_OPTION) {
                final File f = series.getOrigin();
                for (final Series s : Series.getInstances().toArray(new Series[Series.getInstances().size()])) {
                    if (s.getOrigin().equals(f))
                        s.delete();
                }
            }
        }
    });

    return menu;
}

From source file:com.funambol.email.admin.user.ResultSearchUserPanel.java

/**
 * Set up graphic elements for this panel.
 *
 * @throws Exception if error occures during creation of the panel
 *//* www . ja  va2  s . c  o m*/
private void init() throws Exception {

    // create objects to display
    this.setLayout(new BorderLayout());
    this.setBorder(BorderFactory.createEmptyBorder());

    // create a model for the user table and pass it to the JTable object
    model = new UserTableModel();
    table = new JTable(model);

    table.setShowGrid(true);
    table.setAutoscrolls(true);
    table.setSelectionMode(DefaultListSelectionModel.SINGLE_SELECTION);
    JScrollPane scrollpane = new JScrollPane(table);
    table.setPreferredScrollableViewportSize(new Dimension(800, 200));
    table.setFont(GuiFactory.defaultTableFont);
    table.getTableHeader().setFont(GuiFactory.defaultTableHeaderFont);
    this.add(scrollpane, BorderLayout.CENTER);

    //
    // Select user.
    //
    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

    ListSelectionModel rowSM = table.getSelectionModel();

    rowSM.addListSelectionListener(new ListSelectionListener() {
        public void valueChanged(ListSelectionEvent event) {

            if (event.getValueIsAdjusting()) {
                return;
            }

            ListSelectionModel lsm = (ListSelectionModel) event.getSource();

            if (lsm.isSelectionEmpty()) {

                selectedUser = null;
            } else {

                int selectedRow = lsm.getMinSelectionIndex();
                selectedUser = users[selectedRow];
            }
        }
    });

    rowSM.clearSelection();

    table.addMouseListener(new MouseAdapter() {

        public void mouseClicked(MouseEvent event) {

            if (event.getClickCount() < 2) {
                return;
            }

            //
            // If the selected user is already associated to an account
            // then insertion process can't go on.
            //

            String userName = selectedUser.getUsername();
            String value[] = new String[] { userName };
            WhereClause wc = new WhereClause("username", value, WhereClause.OPT_EQ, true);
            MailServerAccount[] tmp = null;
            try {
                tmp = WSDao.getAccounts(wc);
            } catch (Exception e) {
            }

            if (tmp.length > 0) {

                StringBuilder sb = new StringBuilder("The user ");
                sb.append(userName).append(" is already associated to an account");
                Object[] options = { "OK" };
                JOptionPane.showOptionDialog(null, sb.toString(), "Warning", JOptionPane.OK_CANCEL_OPTION,
                        JOptionPane.WARNING_MESSAGE, null, options, options[0]);

            } else {
                //
                // Go to next step.
                //
                step.goToNextStep();
            }
        }
    });

}

From source file:burlov.ultracipher.swing.MainPanel.java

private void deleteCurrentEntry() {
    DataEntry entry = editDataPanel.getData();
    if (entry != null) {
        // int ret = JOptionPane.showOptionDialog(getMainFrame(),
        // "Delete entry?", "Confirm",
        // JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null,
        // null, JOptionPane.NO_OPTION);
        int ret = JOptionPane.showConfirmDialog(SwingGuiApplication.getInstance().getMainFrame(),
                "Delete entry?", "Warning", JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
        if (ret == JOptionPane.OK_OPTION) {
            SwingGuiApplication.getInstance().getDatabase().deleteEntry(entry);
            SwingGuiApplication.getInstance().updateNeedSave(true);
            searchResultModel.removeElement(entry);
            editDataPanel.editData(null, false);
            searchResults.clearSelection();
        }/*from  www .j  a  v  a  2 s.  co  m*/
    }

}

From source file:net.sf.jabref.gui.preftabs.PreferencesDialog.java

public PreferencesDialog(JabRefFrame parent) {
    super(parent, Localization.lang("JabRef preferences"), false);
    JabRefPreferences prefs = JabRefPreferences.getInstance();
    frame = parent;// w w  w .j a  v a2 s .c  om

    main = new JPanel();
    JPanel mainPanel = new JPanel();
    JPanel lower = new JPanel();

    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(mainPanel, BorderLayout.CENTER);
    getContentPane().add(lower, BorderLayout.SOUTH);

    final CardLayout cardLayout = new CardLayout();
    main.setLayout(cardLayout);

    List<PrefsTab> tabs = new ArrayList<>();
    tabs.add(new GeneralTab(prefs));
    tabs.add(new NetworkTab(prefs));
    tabs.add(new FileTab(frame, prefs));
    tabs.add(new FileSortTab(prefs));
    tabs.add(new EntryEditorPrefsTab(frame, prefs));
    tabs.add(new GroupsPrefsTab(prefs));
    tabs.add(new AppearancePrefsTab(prefs));
    tabs.add(new ExternalTab(frame, this, prefs));
    tabs.add(new TablePrefsTab(prefs));
    tabs.add(new TableColumnsTab(prefs, parent));
    tabs.add(new LabelPatternPrefTab(prefs, parent.getCurrentBasePanel()));
    tabs.add(new PreviewPrefsTab(prefs));
    tabs.add(new NameFormatterTab(prefs));
    tabs.add(new ImportSettingsTab(prefs));
    tabs.add(new XmpPrefsTab(prefs));
    tabs.add(new AdvancedTab(prefs));

    // add all tabs
    tabs.forEach(tab -> main.add((Component) tab, tab.getTabName()));

    mainPanel.setBorder(BorderFactory.createEtchedBorder());

    String[] tabNames = tabs.stream().map(PrefsTab::getTabName).toArray(String[]::new);
    JList<String> chooser = new JList<>(tabNames);
    chooser.setBorder(BorderFactory.createEtchedBorder());
    // Set a prototype value to control the width of the list:
    chooser.setPrototypeCellValue("This should be wide enough");
    chooser.setSelectedIndex(0);
    chooser.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

    // Add the selection listener that will show the correct panel when
    // selection changes:
    chooser.addListSelectionListener(e -> {
        if (e.getValueIsAdjusting()) {
            return;
        }
        String o = chooser.getSelectedValue();
        cardLayout.show(main, o);
    });

    JPanel buttons = new JPanel();
    buttons.setLayout(new GridLayout(4, 1));
    buttons.add(importPreferences, 0);
    buttons.add(exportPreferences, 1);
    buttons.add(showPreferences, 2);
    buttons.add(resetPreferences, 3);

    JPanel westPanel = new JPanel();
    westPanel.setLayout(new BorderLayout());
    westPanel.add(chooser, BorderLayout.CENTER);
    westPanel.add(buttons, BorderLayout.SOUTH);
    mainPanel.setLayout(new BorderLayout());
    mainPanel.add(main, BorderLayout.CENTER);
    mainPanel.add(westPanel, BorderLayout.WEST);

    JButton ok = new JButton(Localization.lang("OK"));
    JButton cancel = new JButton(Localization.lang("Cancel"));
    ok.addActionListener(new OkAction());
    CancelAction cancelAction = new CancelAction();
    cancel.addActionListener(cancelAction);
    lower.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
    ButtonBarBuilder buttonBarBuilder = new ButtonBarBuilder(lower);
    buttonBarBuilder.addGlue();
    buttonBarBuilder.addButton(ok);
    buttonBarBuilder.addButton(cancel);
    buttonBarBuilder.addGlue();

    // Key bindings:
    KeyBinder.bindCloseDialogKeyToCancelAction(this.getRootPane(), cancelAction);

    // Import and export actions:
    exportPreferences.setToolTipText(Localization.lang("Export preferences to file"));
    exportPreferences.addActionListener(e -> {
        String filename = FileDialogs.getNewFile(frame, new File(System.getProperty("user.home")),
                Collections.singletonList(".xml"), JFileChooser.SAVE_DIALOG, false);
        if (filename == null) {
            return;
        }
        File file = new File(filename);
        if (!file.exists() || (JOptionPane.showConfirmDialog(PreferencesDialog.this,
                Localization.lang("'%0' exists. Overwrite file?", file.getName()),
                Localization.lang("Export preferences"),
                JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION)) {

            try {
                prefs.exportPreferences(filename);
            } catch (JabRefException ex) {
                LOGGER.warn(ex.getMessage(), ex);
                JOptionPane.showMessageDialog(PreferencesDialog.this, ex.getLocalizedMessage(),
                        Localization.lang("Export preferences"), JOptionPane.ERROR_MESSAGE);
            }
        }
    });

    importPreferences.setToolTipText(Localization.lang("Import preferences from file"));
    importPreferences.addActionListener(e -> {
        String filename = FileDialogs.getNewFile(frame, new File(System.getProperty("user.home")),
                Collections.singletonList(".xml"), JFileChooser.OPEN_DIALOG, false);
        if (filename != null) {
            try {
                prefs.importPreferences(filename);
                updateAfterPreferenceChanges();
                JOptionPane.showMessageDialog(PreferencesDialog.this,
                        Localization.lang("You must restart JabRef for this to come into effect."),
                        Localization.lang("Import preferences"), JOptionPane.WARNING_MESSAGE);
            } catch (JabRefException ex) {
                LOGGER.warn(ex.getMessage(), ex);
                JOptionPane.showMessageDialog(PreferencesDialog.this, ex.getLocalizedMessage(),
                        Localization.lang("Import preferences"), JOptionPane.ERROR_MESSAGE);
            }
        }
    });

    showPreferences.addActionListener(
            e -> new PreferencesFilterDialog(new JabRefPreferencesFilter(Globals.prefs), frame)
                    .setVisible(true));
    resetPreferences.addActionListener(e -> {
        if (JOptionPane.showConfirmDialog(PreferencesDialog.this,
                Localization.lang("Are you sure you want to reset all settings to default values?"),
                Localization.lang("Reset preferences"),
                JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION) {
            try {
                prefs.clear();
                JOptionPane.showMessageDialog(PreferencesDialog.this,
                        Localization.lang("You must restart JabRef for this to come into effect."),
                        Localization.lang("Reset preferences"), JOptionPane.WARNING_MESSAGE);
            } catch (BackingStoreException ex) {
                LOGGER.warn(ex.getMessage(), ex);
                JOptionPane.showMessageDialog(PreferencesDialog.this, ex.getLocalizedMessage(),
                        Localization.lang("Reset preferences"), JOptionPane.ERROR_MESSAGE);
            }
            updateAfterPreferenceChanges();
        }
    });

    setValues();

    pack();

}

From source file:com.openbravo.pos.imports.JPanelCSVImport.java

/**
 * Reads the headers from the CSV file and initializes subsequent form
 * fields. This function first reads the headers from the CSVFileName file,
 * then puts them into the header combo boxes and enables the other form
 * inputs./* w  ww .  java 2s .  c om*/
 *
 * @todo Simplify this method by stripping the file reading and writing
 * functionality out into it's own class. Also make the enabling fields
 * section into it's own function and return the 'Headers' to the calling
 * function to be added there.
 *
 * @param CSVFileName Name of the file (including the path) to open and read
 * CSV data from
 * @throws IOException If there is an issue reading the CSV file
 */
private void GetheadersFromFile(String CSVFileName) throws IOException {

    File f = new File(CSVFileName);
    if (f.exists()) {
        products = new CsvReader(CSVFileName);
        products.setDelimiter(((String) jComboSeparator.getSelectedItem()).charAt(0));
        products.readHeaders();
        // We need a minimum of 5 columns to map all required fields                            
        if (products.getHeaderCount() < 5) {
            JOptionPane.showMessageDialog(null, "Insufficient headers found in file", "Invalid Header Count.",
                    JOptionPane.WARNING_MESSAGE);
            products.close();
            return;
        }
        rowCount = 0;
        int i = 0;
        Headers.clear();
        Headers.add("");
        jComboName.addItem("");
        jComboReference.addItem("");
        jComboBarcode.addItem("");
        jComboBuy.addItem("");
        jComboSell.addItem("");
        jComboCategory.addItem("");

        /**
         * @todo Return header list for processing elsewhere
         */
        while (i < products.getHeaderCount()) {
            jComboReference.addItem(products.getHeader(i));
            jComboBarcode.addItem(products.getHeader(i));
            jComboName.addItem(products.getHeader(i));
            jComboBuy.addItem(products.getHeader(i));
            jComboSell.addItem(products.getHeader(i));
            jComboCategory.addItem(products.getHeader(i));
            Headers.add(products.getHeader(i));
            ++i;
        }

        //enable all the chsck boxes ready for use
        enableCheckBoxes();

        //Count the records found
        while (products.readRecord()) {
            ++rowCount;
        }

        jTextRecords.setText(Long.toString(rowCount));
        // close the file we will open again when required                        
        products.close();

    } else {
        JOptionPane.showMessageDialog(null, "Unable to locate " + CSVFileName, "File not found",
                JOptionPane.WARNING_MESSAGE);
    }
}

Example usage for javax.swing JOptionPane WARNING_MESSAGE

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