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  1. PO
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    <p>Much better if you use JCombobox but if you are using Jtextfield, I would rather suggest to you to use Jlist and put in JWindow since you are using textfield, thats what I've tried in my Dictionary application.</p> <p>EDIT : </p> <pre><code>public class MainMenu extends JPanel { private final Connection connection; private final Application application; private JTextField word = new JTextField(10); private final JButton translate = new JButton(); private final JComboBox translators = new JComboBox(); private final JButton search = new JButton(); private JList speechPartAndDefinitionWidget; private final DefaultListModel speechPartAndDefinitionWidgetModel = new DefaultListModel(); private Translator translator; private Suggestor suggestor; private DefaultListModel translatedWidgetModel; private JList translatedWidget; private final DefaultListModel suggestionWidgetModel = new DefaultListModel(); private final JList suggestionWidget = new JList(suggestionWidgetModel); private JavaWindow javaWindow = new JavaWindow(suggestionWidget); public MainMenu(Application application, Connection connection) { word.getDocument().addDocumentListener(new DocumentListener() { public void insertUpdate(DocumentEvent e) { try { onWordUpdated(word.getText()); } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (SQLException e1) { e1.printStackTrace(); } } public void removeUpdate(DocumentEvent e) { try { onWordUpdated(word.getText()); } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (SQLException e1) { e1.printStackTrace(); } } public void changedUpdate(DocumentEvent e) { try { onWordUpdated(word.getText()); } catch (ClassNotFoundException e1) { e1.printStackTrace(); } catch (SQLException e1) { e1.printStackTrace(); } } }); this.application = application; this.connection = connection; translators.setFocusable(false); word.grabFocus(); word.requestFocus(); word.setFocusable(true); search.setText("&lt;html&gt;&lt;b&gt;&lt;u&gt;S&lt;/u&gt;earch&lt;/b&gt;&lt;/html&gt;"); translate.setText("&lt;html&gt;&lt;b&gt;&lt;u&gt;T&lt;/u&gt;ranslate&lt;/b&gt;&lt;/html&gt;"); translators.addItem(new EnglishBisayaTranslator(connection)); setToolTipText("English-Bisaya"); translators.addItem(new BisayaEnglishTranslator(connection)); setToolTipText("Bisaya-English"); setLayout(new BorderLayout()); JPanel formX = new JPanel(); formX.setLayout(new BorderLayout()); JPanel header = new JPanel(); header.setLayout(new GridBagLayout()); header.add(translators); header.add(word); header.add(search); header.add(translate); translators.setBorder(BorderFactory.createEtchedBorder(1)); translators.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 10)); word.setBorder(BorderFactory.createEtchedBorder()); word.setBorder(BorderFactory.createLineBorder(Color.gray, 1)); word.setFont(new Font("Garamond", Font.BOLD, 17)); suggestionWidget.setFont(new Font("Calibri", Font.BOLD, 17)); header.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 8)); formX.add(BorderLayout.PAGE_START, header); formX.setBorder(BorderFactory.createEmptyBorder(10, 15, 10, 10)); add(header, BorderLayout.NORTH); speechPartAndDefinitionWidget = new JList(speechPartAndDefinitionWidgetModel); speechPartAndDefinitionWidget.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); speechPartAndDefinitionWidget.addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent ev) { onDefinitionSelected(ev); } }); JPanel formBottom = new JPanel(); formBottom.setLayout(new GridBagLayout()); add(formBottom, BorderLayout.CENTER); Component up = new JScrollPane(speechPartAndDefinitionWidget); formBottom.setBorder(BorderFactory.createEmptyBorder(20, 10, 10, 10)); speechPartAndDefinitionWidget.setBorder(BorderFactory.createLineBorder(Color.black,1)); JPanel down = new JPanel(); down.setLayout(new BorderLayout()); down.setBorder(BorderFactory.createLineBorder(Color.black, 1)); down.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); down.add(translatedWidget = new JList(translatedWidgetModel = new DefaultListModel())); add(down, BorderLayout.CENTER); translatedWidget.setBorder(BorderFactory.createLineBorder(Color.black, 1)); translatedWidget.setFont(new Font("Calibri",Font.BOLD, 17)); speechPartAndDefinitionWidget.setFont(new Font("Calibri", Font.BOLD, 17)); add(BorderLayout.CENTER, new JSplitPane(JSplitPane.VERTICAL_SPLIT, up, down)); word.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ESCAPE) { hideSuggestionWindowToBack(); } else if (e.getKeyCode() == KeyEvent.VK_ENTER) { int selectedIndex = suggestionWidget.getSelectedIndex(); if (selectedIndex == -1) { onSearchClick(); } else { onSuggestionSelected(selectedIndex); } } } public void keyReleased(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER) { hideSuggestionWindowToBack(); onSearchClick(); } } }); translators.addActionListener(new ActionListener() { public void actionPerformed (ActionEvent e) { onTranslatorsClick(); } } ); word.addKeyListener(new KeyAdapter() { public void keyPressed (KeyEvent e) { if (suggestionWidgetModel.isEmpty()) { return; } if (e.getKeyCode() == KeyEvent.VK_DOWN) { final Point location = word.getLocationOnScreen(); javaWindow.setLocation(location.x, location.y + word.getHeight()); showSuggestionWindowToBack(); int currentSelectedItemIndex = suggestionWidget.getSelectedIndex(); if (currentSelectedItemIndex == -1 || currentSelectedItemIndex == suggestionWidgetModel.size() - 1) { suggestionWidget.setSelectedIndex(0); } else if (currentSelectedItemIndex &lt; suggestionWidgetModel.size() - 1) { suggestionWidget.setSelectedIndex(currentSelectedItemIndex + 1); } } else if (e.getKeyCode() == KeyEvent.VK_UP) { int currentSelectedItemIndex = suggestionWidget.getSelectedIndex(); if (currentSelectedItemIndex == -1 || currentSelectedItemIndex == suggestionWidgetModel.size() + 1) { suggestionWidget.setSelectedIndex(0); } else if (currentSelectedItemIndex &lt; suggestionWidgetModel.size() + 1) { suggestionWidget.setSelectedIndex(currentSelectedItemIndex - 1); } } } } ); suggestionWidget.addMouseListener(new MouseAdapter() { @Override public void mousePressed(MouseEvent e) { int selectedIndex = suggestionWidget.getSelectedIndex(); if (e.getClickCount() == 2) { if (selectedIndex &lt; -1) { onSearchClick(); } else { onSuggestionSelected(selectedIndex); hideSuggestionWindowToBack(); } } } public void mouseReleased(MouseEvent e) { if (e.getClickCount() == 2) { { hideSuggestionWindowToBack(); } } } }); speechPartAndDefinitionWidget.addKeyListener(new KeyAdapter() { @Override public void keyPressed (KeyEvent e) { if (speechPartAndDefinitionWidgetModel.isEmpty()) { return; } if (e.getKeyCode() == KeyEvent.VK_DOWN) { int currentSelectedItemIndex = speechPartAndDefinitionWidget.getSelectedIndex(); if (currentSelectedItemIndex == -1 || currentSelectedItemIndex == speechPartAndDefinitionWidgetModel.size() - 1) { speechPartAndDefinitionWidget.setSelectedIndex(0); } else if (currentSelectedItemIndex &lt; speechPartAndDefinitionWidgetModel.size() - 1) { speechPartAndDefinitionWidget.setSelectedIndex(currentSelectedItemIndex + 1); onTranslate(); } } else if (e.getKeyCode() == KeyEvent.VK_UP) { int currentSelectedItemIndex = speechPartAndDefinitionWidget.getSelectedIndex(); if (currentSelectedItemIndex == -1 || currentSelectedItemIndex == speechPartAndDefinitionWidgetModel.size() + 1) { speechPartAndDefinitionWidget.setSelectedIndex(0); } else if (currentSelectedItemIndex &lt; speechPartAndDefinitionWidgetModel.size() + 1) { speechPartAndDefinitionWidget.setSelectedIndex(currentSelectedItemIndex - 1); } } } } ); speechPartAndDefinitionWidget.addMouseMotionListener(new MouseMotionAdapter() { @Override public void mouseMoved(MouseEvent e) { final int x = e.getX(); final int y = e.getY(); final Rectangle cellBounds = speechPartAndDefinitionWidget.getCellBounds(0, speechPartAndDefinitionWidget.getModel().getSize() - 1); if (cellBounds != null &amp;&amp; cellBounds.contains(x, y)) { speechPartAndDefinitionWidget.setCursor(new Cursor(Cursor.HAND_CURSOR)); } else { speechPartAndDefinitionWidget.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); } } } ); speechPartAndDefinitionWidget.setCellRenderer(new DefaultListCellRenderer() { @Override public Component getListCellRendererComponent (JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { final String speechPart = ((DefinitionUiModel) value).getPart().getFriendlyName(); final String definition = ((DefinitionUiModel) value).getDefinition().toString(); Color bg = null; Color fg = null; final JLabel renderer = new JLabel( "&lt;html&gt;&lt;font color=red&gt;" + speechPart + "&lt;/font&gt;) =&gt; &lt;font color=black&gt;" + definition + "&lt;/font&gt;&lt;/html&gt;"); if (renderer.isEnabled()) { if (isSelected) { renderer.setText("&lt;html&gt;&lt;font color=gray&gt;" + speechPart + "&lt;/font&gt;&lt;font color=blue&gt;&lt;u&gt;&lt;b&gt;" + definition + "&lt;/b&gt;&lt;/u&gt;&lt;/font&gt;&lt;/html&gt;"); renderer.setCursor(new Cursor(Cursor.HAND_CURSOR)); } JList.DropLocation dropLocation = list.getDropLocation(); if (dropLocation != null &amp;&amp; !dropLocation.isInsert() &amp;&amp; dropLocation.getIndex() == index) { bg = DefaultLookup.getColor(this, ui, "List.dropCellBackground"); fg = DefaultLookup.getColor(this, ui, "List.dropCellForeground"); isSelected = true; } if (isSelected) { renderer.setBackground(bg == null ? list.getSelectionBackground() : bg); renderer.setForeground(fg == null ? list.getSelectionForeground() : fg); } Border border = null; if (cellHasFocus) { if (isSelected) { border = DefaultLookup.getBorder(this, ui, "List.focusSelectedCellHighlightBorder"); } if (border == null) { border = DefaultLookup.getBorder(this, ui, "List.focusCellHighlightBorder"); } } else { } } return renderer; } } ); translatedWidget.setForeground(Color.black); translate.addActionListener(new ActionListener() { public void actionPerformed (ActionEvent e) { onTranslate(); } } ); search.setToolTipText("find"); search.addActionListener(new ActionListener() { public void actionPerformed (ActionEvent e) { onSearchClick(); } } ); translators.setSelectedIndex(0); suggestionWidget.setBorder(BorderFactory.createLineBorder(Color.gray, 1)); onTranslatorsClick(); } private void onSuggestionSelected(int selectedIndex) { String hold = (String) suggestionWidgetModel.getElementAt(selectedIndex); word.setText(hold); hideSuggestionWindowToBack(); suggestionWidgetModel.clear(); if (javaWindow == null) { javaWindow.dispose(); javaWindow = null; } } public void onWordUpdated(final String toComplete) throws ClassNotFoundException, SQLException { new Thread(new Runnable() { public void run() { try { final List&lt;Suggestion&gt; suggestions = suggestor.getSuggestions(toComplete); SwingUtilities.invokeLater(new Runnable() { public void run() { speechPartAndDefinitionWidgetModel.clear(); translatedWidgetModel.clear(); suggestionWidgetModel.clear(); try { for (Suggestion suggestion : suggestions) { suggestionWidgetModel.addElement(suggestion.getCaption()); } if (!suggestions.isEmpty()) { suggestionWidget.setSelectedIndex(0); if (javaWindow == null) { javaWindow = new JavaWindow(suggestionWidget); } else { final Point location = word.getLocationOnScreen(); javaWindow.setLocation(location.x, location.y + word.getHeight()); } showSuggestionWindowToBack(); } else { hideSuggestionWindowToBack(); } } catch (Exception exception) { exception.printStackTrace(); } } }); } catch (SQLException e) { onSqlError(e); } } } , "onWordUpdated"). start(); } private void onTranslate() { try { translatedWidgetModel.clear(); String lookupWord = word.getText(); if (lookupWord != null) { Collection&lt;String&gt; bisayaWords = this.translator.translateSimple(lookupWord); for (String bisayaWord : bisayaWords) { translatedWidgetModel.addElement(bisayaWord.toUpperCase()); } } } catch (SQLException ex) { onSqlError(ex); } } private void onSqlError(SQLException ex) { JOptionPane.showMessageDialog(null, "SQL Error! :" + ex.getMessage()); } private void onDefinitionSelected(ListSelectionEvent ev) { if (!ev.getValueIsAdjusting()) { int selectedIndex = speechPartAndDefinitionWidget.getSelectedIndex(); if (selectedIndex != -1) { final DefinitionUiModel definitionUiModel = (DefinitionUiModel) speechPartAndDefinitionWidgetModel.get(selectedIndex); translate(definitionUiModel.getDefinition()); } } } private void translate(Definition definition) { try { translatedWidgetModel.clear(); Map&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); int definitionId = definition.getId(); String definitionName = definition.getValue(); int nameId = translator.getFromDictionary().getNameIdForDefinitionId(definitionId); if (nameId &gt; -1) { final Collection&lt;String&gt; translation = translator.translateSimple(nameId); for (String transWord : translation) { map.put(transWord, definitionName); for (Map.Entry&lt;String, String&gt; entry : map.entrySet()) { String myValue = entry.getKey().toUpperCase() + " -- " + entry.getValue(); translatedWidgetModel.addElement(myValue); } } } } catch (SQLException ex) { onSqlError(ex); } } private void onSearchClick() { search.setEnabled(true); hideSuggestionWindowToBack(); speechPartAndDefinitionWidgetModel.clear(); translatedWidgetModel.clear(); try { final String lookupWord = word.getText(); if (lookupWord != null) { final Dictionary fromDictionary = translator.getFromDictionary(); final WordDefinitions definitions = fromDictionary.getWordDefinitions(lookupWord); final Iterator&lt;Map.Entry&lt;SpeechPart, List&lt;Definition&gt;&gt;&gt; items = definitions.iterator(); while (items.hasNext()) { final Map.Entry&lt;SpeechPart, List&lt;Definition&gt;&gt; item = items.next(); for (Definition definition : item.getValue()) { speechPartAndDefinitionWidgetModel.addElement(new DefinitionUiModel(item.getKey(), definition)); } } } } catch (SQLException ex) { onSqlError(ex); } } private void onTranslatorsClick() { translator = (Translator) translators.getSelectedItem(); suggestor = new Suggestor(translator.getFromDictionary(), 10); word.setEnabled(true); application.setTitle(translator.toString()); translators.setToolTipText("tooltip : " + translator.toString()); speechPartAndDefinitionWidgetModel.clear(); } private void hideSuggestionWindowToBack() { if (javaWindow == null) { return; } javaWindow.setVisible(false); javaWindow.toBack(); } private void showSuggestionWindowToBack() { if (javaWindow == null) { return; } javaWindow.setVisible(true); javaWindow.toFront(); } } </code></pre>
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    1. POHow can I make a suggestion List in my Autocomplete application?
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    1. POHow can I make a suggestion List in my Autocomplete application?
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    1. COcould you give me some more idea about that?
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    2. COyou have to create another class for your JWindow and put the suggestions list in JWindow, also maybe you have to locate the x,y coordinates between your textfield and the window.
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    3. COsounds so hard, do you have some code for that?
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