Ctrl PgUp / CtrlPgDown in JTables vs JTabbedPanes

Hi there, another wee JTable problem.
I want Ctrl PageUp and Ctrl PageDown to move between JTabbedPanes. This normally works, except when the focus is currently in a JTable. I want it to also work if the focus is in a JTable.
I have tried to stop the JTable from handling the keys by setting the inputmap to "none" but this has no effect (you can see my code for this below).
Here is a test program that shows the bad behaviourimport java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
public class TestTable extends JTable {
     public TestTable(Object[][] data, Object[] headings) {
          super(data, headings);
          setFocusTraversalPolicyProvider(true);
          // Turn off Ctrl PgUp and Ctrl PgDown handling so tab navigation works.
          InputMap inputs = getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
          KeyStroke ctrlPgUpKey = KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_UP, InputEvent.CTRL_DOWN_MASK);
          inputs.put(ctrlPgUpKey, "None");
          KeyStroke ctrlPgDownKey = KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_DOWN, InputEvent.CTRL_DOWN_MASK);
          inputs.put(ctrlPgDownKey, "None");
     public boolean isCellEditable(int row, int column) {
          return false;
     public static void main(String[] args) {
          JFrame frame = new JFrame("Test table");
          JTabbedPane pane = new JTabbedPane();
          frame.add(pane);
          JPanel panel = new JPanel();
          JTextField field = new JTextField("Key Ctrl PgDown or Ctrl PgUp");
          panel.add(field);
          pane.add("test1", panel);
          pane.add("test2", new JScrollPane(new TestTable(new String[][] {{"hello", "me"}}, new String[]{"H1", "H2"})));
          pane.add("test3", new JPanel());
          frame.setBounds(100, 100, 300, 300);
          frame.setVisible(true);
}Thanks,
Tim

i had a similiar problem, had some UIs that had a Tabbed pane and
ScrollBars, and some tabs had JTables in them, anyhow, I just wanted
Control-Page_up/Down to work for the JTabbedPane all the the time so
I did this in my windows look and feel applications and all was well, just posting so maybe this will help someone down the road
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
UIDefaults uiDefaults = UIManager.getDefaults();
// ginny wants Control-Page-Up and Control-Page-Down to work for tabbed
// panes, which it does by default, however, it also works for JTable
// and JScrollPane, and those components grab the keystroke 1st if they are
// all in the same screen, so disabling it for JTable and JScrollPane
// see WindowsLookAndFeel.java
uiDefaults.remove("ScrollPane.ancestorInputMap");
uiDefaults.put("ScrollPane.ancestorInputMap",
new UIDefaults.LazyInputMap(new Object[] {
"RIGHT", "unitScrollRight",
"KP_RIGHT", "unitScrollRight",
"DOWN", "unitScrollDown",
"KP_DOWN", "unitScrollDown",
"LEFT", "unitScrollLeft",
"KP_LEFT", "unitScrollLeft",
"UP", "unitScrollUp",
"KP_UP", "unitScrollUp",
"PAGE_UP", "scrollUp",
"PAGE_DOWN", "scrollDown",
"ctrl PAGE_UP", "None", //"scrollLeft",
"ctrl PAGE_DOWN", "None",//"scrollRight",
"ctrl HOME", "scrollHome",
"ctrl END", "scrollEnd"
uiDefaults.remove("Table.ancestorInputMap");
uiDefaults.put("Table.ancestorInputMap",
new UIDefaults.LazyInputMap(new Object[] {
"ctrl C", "copy",
"ctrl V", "paste",
"ctrl X", "cut",
"COPY", "copy",
"PASTE", "paste",
"CUT", "cut",
"RIGHT", "selectNextColumn",
"KP_RIGHT", "selectNextColumn",
"LEFT", "selectPreviousColumn",
"KP_LEFT", "selectPreviousColumn",
"DOWN", "selectNextRow",
"KP_DOWN", "selectNextRow",
"UP", "selectPreviousRow",
"KP_UP", "selectPreviousRow",
"shift RIGHT", "selectNextColumnExtendSelection",
"shift KP_RIGHT", "selectNextColumnExtendSelection",
"shift LEFT", "selectPreviousColumnExtendSelection",
"shift KP_LEFT", "selectPreviousColumnExtendSelection",
"shift DOWN", "selectNextRowExtendSelection",
"shift KP_DOWN", "selectNextRowExtendSelection",
"shift UP", "selectPreviousRowExtendSelection",
"shift KP_UP", "selectPreviousRowExtendSelection",
"PAGE_UP", "scrollUpChangeSelection",
"PAGE_DOWN", "scrollDownChangeSelection",
"HOME", "selectFirstColumn",
"END", "selectLastColumn",
"shift PAGE_UP", "scrollUpExtendSelection",
"shift PAGE_DOWN", "scrollDownExtendSelection",
"shift HOME", "selectFirstColumnExtendSelection",
"shift END", "selectLastColumnExtendSelection",
"ctrl PAGE_UP", "None", //"scrollLeftChangeSelection",
"ctrl PAGE_DOWN", "None", //"scrollRightChangeSelection",
"ctrl HOME", "selectFirstRow",
"ctrl END", "selectLastRow",
"ctrl shift PAGE_UP", "scrollRightExtendSelection",
"ctrl shift PAGE_DOWN", "scrollLeftExtendSelection",
"ctrl shift HOME", "selectFirstRowExtendSelection",
"ctrl shift END", "selectLastRowExtendSelection",
"TAB", "selectNextColumnCell",
"shift TAB", "selectPreviousColumnCell",
"ENTER", "selectNextRowCell",
"shift ENTER", "selectPreviousRowCell",
"ctrl A", "selectAll",
"ESCAPE", "cancel",
"F2", "startEditing"
}));

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If I use Box instead of JPanel the JTable in the JScrollPane in the Box in the TabbedPane in the JFrame resizes correclty.
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I would still like to know why?
////////KBS
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Box myTwo = Box.createHorizontalBox();
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Here's the current map for the Metal look and feel:
JTable (Java L&F)
Navigate out forward | Tab
Navigate out forward | Ctrl+Tab
Navigate out backward | Shift+Tab
Navigate out backward | Ctrl+Shift+Tab
Move to next cell | Tab
Move to next cell | Right Arrow
Move to previous cell | Shift+Tab
Move to previous cell | Left Arrow
Wrap to next row | Tab
Wrap to next row | Right Arrow
Wrap to previous row | Shift+Tab or Left
Wrap to previous row | Shift+Tab or Left
Block move vertical | PgUp, PgDn
Block move left | Ctrl+PgUp
Block move right | Ctrl+PgDn
Block extend vertical | Shift+PgUp/PgDn
Block extend left | Ctrl+Shift+PgUp
Block extend right | Ctrl+Shift+PgDn
Move to first cell in row | Home
Move to last cell in row | End
Move to first cell in table | Ctrl+Home
Move to last cell in table | Ctrl+End
Select all cells | Ctrl+A
Deselect current selection | Up/Down Arrow
Deselect current selection | Ctrl+Up/Down Arrow
Deselect current selection | Pgup/Pgdn
Deselect current selection | Ctrl+Pgup/Pgdn
Deselect current selection | Home/End
Deselect current selection | Ctrl+Home/End
Extend selection one row | Shift+Up/Down
Extend selection one column | Shift+Left/Right
Extend selection to beginning/end of row | Shift+Home/End
Extend selection to beginning/end of column | Ctrl+Shift+Home/End
Edit cell without overriding current contents | F2
Reset cell content prior to editing | Esc

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What is the best way to overide the Ctrl-Click behavior in JTable etc. to NOT do the toggle selection? Note that this is a mouse event and not a key event, so it can't be turned off or changed by the getActionMap() mechanism.
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Try extending the JList and override the processMouseEvent(MouseEvent evt) method and show your popup menu when the user clicks the mouse while holding the CTRL key down. The code below demonstrates the same.
import java.awt.BorderLayout;
import java.awt.event.MouseEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.ListModel;
import javax.swing.WindowConstants;
public class Temp extends JFrame {
     public Temp() {
          super("Temp");
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
          String [] items = {"One", "Two", "Three", "Four", "Five"};
          JList list = new MyList(items);
          JScrollPane scroller = new JScrollPane(list);
          getContentPane().add(scroller, BorderLayout.CENTER);
          pack();
          setVisible(true);
     class MyList extends JList {
          public MyList() {
               super();
          public MyList(Object[] listData) {
               super(listData);
          public MyList(Vector listData) {
               super(listData);
          public MyList(ListModel dataModel) {
               super(dataModel);
          protected void processMouseEvent(MouseEvent evt) {
               System.out.println(evt.isPopupTrigger());
               int onmask = MouseEvent.CTRL_DOWN_MASK | MouseEvent.BUTTON1_DOWN_MASK;
               if(evt.getModifiersEx() == onmask) {
                    JOptionPane.showMessageDialog(this, "Control + click");
               else {
                    super.processMouseEvent(evt);
     public static void main(String[] args) {
          new Temp();
}Hope this helps
Sai Pullabhotla

Why can I only add up to 7 rows in a table???

I have written the following programme
but can only allow 6 addButton clicks....(I want to allow adding unlimited number of rows)
can anyone run the code and help me out please???
import javax.swing.border.* ;
import javax.swing.* ;
import java.awt.Dimension;
import java.awt.event.* ;
import java.util.*;
import java.awt.*;
import javax.swing.table.TableColumn;
import javax.swing.JTable;
import javax.swing.DefaultCellEditor;
import javax.swing.table.*;
public class ReadingListDialog extends javax.swing.JDialog{
ReadingListDialog me;
String[] type = {"Text Book", "Online Material","Other"};
String[] columns;
JComboBox typeComboBox;
JButton editButton;
JButton cancelButton;
JButton saveButton;
JButton addButton;
JButton deleteButton;
JTable bookTable;
JTable onlineTable;
JTable otherTable;
JTabbedPane tabbedPane;
Box outerBox;
Box buttonBox;
JScrollPane bookScrollPane ;
JScrollPane onlineScrollPane ;
JScrollPane otherScrollPane ;
Vector row;
DefaultTableModel bookModel;
DefaultTableModel onlineModel;
DefaultTableModel otherModel;
private boolean DEBUG = true;
/** Creates a new instance of ReadingListDialog */
public ReadingListDialog(java.awt.Frame parent, boolean modal, boolean edit) {
initComponents();
public void initComponents(){
me = this ;
ImageIcon icon = new ImageIcon("middle.gif");
Object[][] bookData = {
// {"Altemate Java", "Robert Sedgewick", "Library", "June 30", "p.130-150","No notes","Read"},
//{"Elementary Algebra","Ian Horthorn","Desk Copy","sep 28","p.111, p.112","important topic!!!True......hello everyone","Not Read"},
String[] bookColumn = {"Text Title",
"Author",
"Location",
"Read By Date",
"Page/Chapter",
"Note",
"Status"
DefaultTableModel bookModel = new DefaultTableModel(bookData, bookColumn);
bookTable = new JTable(bookModel);
setUpReadingStatusColumn(bookTable.getColumnModel().getColumn(6));
bookTable.setPreferredScrollableViewportSize(new Dimension(500, 35));
Object[][] onlineData = {
// {"Google", "www.google.com", "June 30", "a search engine","Don't understand"},
// {"Waikato Uni","www.waikato.ac.nz","Sep 29","important topic!!!True......hello everyone","Half way"},
String[] onlineColumn = {"Website Name",
"URL",
"Read By Date",
"Note",
"Status"
DefaultTableModel onlineModel = new DefaultTableModel(onlineData, onlineColumn);
onlineTable = new JTable(onlineModel);
setUpReadingStatusColumn(onlineTable.getColumnModel().getColumn(4));
onlineTable.setPreferredScrollableViewportSize(new Dimension(500, 35));
Object[][] otherData = {
//{"Lecture slide", "N/A", "June 30", "useful for assignment 2","Read"},
//{"Notes on Linear Algebra","DeskCopy","Sep 29","important topic!!!True......hello everyone","Not Read"},
String[] otherColumn = {"Material",
"Location",
"Read By Date",
"Note",
"Status"
DefaultTableModel otherModel = new DefaultTableModel(otherData, otherColumn);
otherTable = new JTable(otherModel);
setUpReadingStatusColumn(otherTable.getColumnModel().getColumn(4));
otherTable.setPreferredScrollableViewportSize(new Dimension(500, 35));
tabbedPane = new JTabbedPane();
//create the buttons
cancelButton = new JButton("Cancel");
saveButton = new JButton("Save");
addButton = new JButton( "Add Row" );
deleteButton = new JButton("Delete Row");
//add buttons to buttonBox
buttonBox = new Box(BoxLayout.X_AXIS);
buttonBox.add(saveButton);
buttonBox.add(addButton);
buttonBox.add(deleteButton);
buttonBox.add(cancelButton);
addButton.addActionListener( new ActionListener()          {
public void actionPerformed(ActionEvent e)               {
DefaultTableModel bookModel = (DefaultTableModel)bookTable.getModel();
Object[] newRow = new Object[7];
int row = bookTable.getRowCount() + 1;
for(int k = 0; k<row; k++)
newRow[k] = "";
bookModel.addRow( newRow );
//Create the scroll pane and add the table to it.
bookScrollPane= new JScrollPane(bookTable);
onlineScrollPane = new JScrollPane(onlineTable);
otherScrollPane = new JScrollPane(otherTable);
//add the scroll panes to each tab
tabbedPane.addTab("Text Book Readings", icon, bookScrollPane, "Edit your reading list");
tabbedPane.setSelectedIndex(0);
tabbedPane.addTab("Online Readings", icon, onlineScrollPane, "Still does nothing");
tabbedPane.addTab("Other Materials", icon, otherScrollPane, "Still does nothing");
//add the tabbedPane to outerBox
outerBox = new Box(BoxLayout.Y_AXIS);
//outerBox.setBorder(new EmptyBorder(0,0,20,15));
outerBox.add(tabbedPane);
outerBox.add(buttonBox);
//add the outerBox to the pane
getContentPane().add(outerBox);
if (DEBUG) {
bookTable.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
//printDebugData(bookTable);
cancelButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
me.dispose();
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
public void setUpReadingStatusColumn(TableColumn statusColumn) {
//Set up the editor for the status cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("");
comboBox.addItem("Read");
comboBox.addItem("Just Started");
comboBox.addItem("Half way");
comboBox.addItem("Not Read");
comboBox.addItem("Don't understand");
statusColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the status cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for selecting a status");
statusColumn.setCellRenderer(renderer);
//Set up tool tip for the status column header.
TableCellRenderer headerRenderer = statusColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the satus to see a list of choices");
public static void main(String args[]) {
ReadingListDialog r = new ReadingListDialog(new javax.swing.JFrame(), true, true);
r.setSize(new Dimension(600,500));
r.show();

Try this
public void actionPerformed(ActionEvent e) {
DefaultTableModel bookModel = (DefaultTableModel)bookTable.getModel();
Object[] newRow = new Object[] {};
//int row = bookTable.getRowCount() + 1;
//for(int k = 0; k<row; k++)
//newRow[k] = "";
bookModel.addRow( newRow );

[SOLVED] Page Up and Page Down keys no longer working correctly

uname ...
3.12.9-2-ARCH #1 SMP PREEMPT x86_64
I use KDE 4.12.2
For some reason - applications in KDE are no longer responding to the PgUp and PgDown keys.
For example previously in firefox PgUp/PgDown would scroll the current web page up or down, but now it doesn't work.
Firefox DOES change tabd using CTRL + PgUp/CTRL + PgDown as previously.
Another example Okular ignores PgUp/PgDown - although (again) it does respond to CTRL + PgUp/CTRL + PgDown.
Previously it responded with the correct move one page up and down.
If I go to a terminal
showkey
keycode 28 release
# PgDown
keycode 109 press
keycode 109 release
# PgUp
keycode 104 press
keycode 104 release
If I try to set a keyboard sortcut in a KDE app (e.g. change the Previous / Next page keyboard shortcut in Okular) the app recognises the PgUp and PgDown keys, but the application doesn;t respond.
I've also tried a different keyboard and I get the same behaviour.
I'm completely baffled, any help?
What could be causing this strange behaviour?
Last edited by bhrgunatha (2014-02-22 03:51:02)

From what I understand - they would have to be global keyboard shortcuts. I've looked in the KDE system settings anmd there are no global shortcuts defined for PgUp and PgDown. I certainly haven't configured anythin to use them.
I'm not sure if there is anywhere else to look for them.
EDIT: So after about an hour or so of poking around, it seems I DID set shortcuts for PgUp/PgDown (and promptyl forgot about them.)
These set global shortcuts that aren't recognised by the KDE system settings shortcuts applet.
Last edited by bhrgunatha (2014-02-22 03:50:41)

PP CS6 PageUp & PageDn shortcut keys not working

Heads up... This may look like a simple topic that's been covered before, but read on and you'll see it's different.
I've been using Premiere since v5.5 (Windows 95, not CS 5.5!). I use lots of shortcut keys for all my apps. Premiere has always used PageUp and PageDn to move the cursor to the next edit point (any cut video or audio clip). In PP CS6, I went into change the shortcut keys for those two commands to the same ones I've been using for years. PP CS6 has two sets of options for cursor movements: Selected Track(s) or Any Track. The Any Track is the way it's worked before in earlier versions of PP. I set the Any Tracks Next/Previous to PageDown and PageUp respectively. The actual keystrokes appear in the hot-key window when I press them so I know PP sees the keys and knows what they are.
When I saved the shortcuts and went to the timeline... nada. PgUp and PgDn do nothing. This has nothing to do with selected video tracks as I'm using the Any Tracks option. To do a further test, I changed the shortcut keys to Ctrl+PgUp and Ctr+PgDn for Any Track. When I tested that out, it worked perfectly. So this appears to be a bug of some kind. I've been using PgUp and PgDn for many years. I certainly don't want to have to hold the Ctrl key down while Paging Up and Down to move around the project from clip to clip!
Does anyone have a solution to this one?
Thanks for your help...

"But you can set any shortcut key to suit whatever keys you have available."
Yeah, I know, but every now and then I have to reinstall and then there's the agony of changing again from the defaults :-( In the end, like 'em or hate 'em, sticking with the defaults usually makes for an easier life. I say that as someone who has been commercially programming since 1967 and forced to use practically every crazy language and stupid machine ever invented ;-)

How to skip words using keyboard shortcuts

Using Ctrl+Rt arrow usually skips words when typing in a free text box but FF uses that keyboard command to move through the open tabs. Is this customizable?
== This happened ==
Every time Firefox opened
== typing in a text field

on the Keyboard Shortcuts page, under the Windows & Tabs section, it says that CTRL + LEFT ARROW (or RIGHT ARROW) will navigate between tabs. this means that when you are in a text box (e.g. typing an email in a web based email provider like gmail, or in the box i am typing this reply in right now) when you press CTRL + L/R ARROW it changes tabs instead of skipping words. so basically firefox is overriding ability to skip words using CTRL + L/R ARROW. this is rather annoying when typing emails using firefox. i have resorted to typing my emails in a word processor, then pasting into gmail.
is there a way to disable the CTRL + L/R ARROW shortcut in firefox? it seems redundant to even have that shortcut because CTRL + PGUP/PGDN already does this.
i did find [http://ubuntuforums.org/showthread.php?t=211030 this page] on the ubuntu forums with a user experiencing the same issue. one user suggested the following (quoted below), but it didnt work for me because the setting was already set to true.
QUOTE FROM UBUNTU FORUMS:
In firefox, type about:config in the adress bar and change layout.word_select.stop_at_punctuation to True

Scrolling through tabs in Firefox without opening them

With many tabs open we get two arrows on top of the screen to scroll left and right through tabs by clicking with the mouse. Please see the attached image for an example.
Is there a keyboard shortcut for those arrows or is it possible to add one?
Note: I am aware that we can scroll through tabs directly with Alt+[Num], or by using Ctrl+PgUp and Ctrl+PgDown. I have dozens of tabs open, so if I want to go to tab 35 I can't use Alt+[Num], and using Ctrl+PgDn is a problem if I'm say in tab 65. The reason is that with Ctrl+PgDn the tabs from 65 back to 35 would all open while I'm passing through them.

Image wasn't attached properly and I can't seem to edit the question. Here it is.

Ctrl PgUp / CtrlPgDown in JTables vs JTabbedPanes

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