Skipping jTable cells with tab

When a user presses tab, the selected cell moves to the next cell to the right.
Is there a way that when the user presses tab, that the next cell will be skipped, and the following one will be selected?
Thanks

Ok I gave you the weekend :)
bump
I thought it would be in the DefaultCellEditor, but no luck there.
Any help is appreciated.

Similar Messages

Pasting in Numbers cell with tabs and returns

I am converting my old Appleworks SS files to Numbers and it works fine when I just open the .cwk file with Numbers. But when I try to paste in to a cell text with tabs and returns, unlike AW, it puts as much of the text as will fit in one cell, truncating the remainder.
Is there some way to change Numbers preferences (or any other technique) to push text separated with tabs to the next cell right and for returns to push to the next row?

I just figured out what I did wrong. The text I was pasting in was enclosed in quote marks. Once I removed those, it pasted in perfectly, just like AW.

JTable Cell with two icons

Hello -
I'm rather new to Java, so please excuse me if this is a simple question. For a project I am working on, I am attempting to deal with placing two icons in a single JTable cell. For the life of me I have no idea if this is even feasible, let alone how I would implement it. Originally I thought about attempting to overload the JLabel class (as this is what the JTable cell is based upon, if I'm not mistaken?) and allowing two icons to be placed per label.
Am I on the right track? Is this even possible? Any suggestions?
Thanks much.

Please read the forum for JTable.
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
You will know that you canuse any component as CellRenderer, this component can have whatever you want (say 2 icons and 5 comboboxes)
here is short example that shows 2 icons in JTable
import java.awt.*;
import java.awt.image.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TwoIcons extends JFrame {
 public static void main(String[] args){
 createIcons();
 SwingUtilities.invokeLater
 new Runnable()
 public void run() {
 new TwoIcons();
 public TwoIcons(){
 super("Test");
 DefaultTableModel tm = new DefaultTableModel(
 new Object[][]{
 {new IconPair("cross", "cross"), "just a string"},
 {new IconPair("circle", "cross"),"just another string"},
 {new IconPair("String", "circle"),"yet another string"}
 }, new String[]{"Two Icons","String"}){
 public Class getColumnClass(int columnIndex){
 if(columnIndex==0){
 return IconPair.class;
 else
 return super.getColumnClass(columnIndex);
 JTable table = new JTable(tm);
 final Color bg = table.getBackground();
 table.setDefaultRenderer(IconPair.class, new TableCellRenderer(){
 RendererPanel renderer = new RendererPanel(bg);
 public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
 renderer.setIcons((IconPair)value);
 return renderer;
 JScrollPane scp = new JScrollPane(table);
 add(scp);
 setSize(400,100);
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 pack();
 setVisible(true);
 class RendererPanel extends JPanel{
 JLabel tf1,tf2;
 RendererPanel(Color bg){
 setLayout(new BoxLayout(this,BoxLayout.LINE_AXIS) );
 tf1=new JLabel();
 tf2=new JLabel();
 add(tf1);
 add(Box.createRigidArea(new Dimension(5,0)));
 add(tf2);
 setBackground(bg);
 public void setIcons(IconPair value) {
 tf1.setIcon(value.i1);
 tf2.setIcon(value.i2);
 //uncomment next 2 lines if you want text as well
// tf1.setText(value.s1);
// tf2.setText(value.s2);
 class IconPair {
 public Icon i1,i2;
 public String s1,s2;
 IconPair(String s1, String s2){
 this.i1=icons.get(s1);
 this.i2=icons.get(s2);
 this.s1=s1;
 this.s2=s2;
 static Map<String,Icon> icons = new HashMap<String,Icon>();
 public static void createIcons(){
 Image img = new BufferedImage(10,10, BufferedImage.TYPE_INT_ARGB);
 Graphics2D g2=(Graphics2D)(img.getGraphics());
 g2.setColor(Color.RED);
 g2.drawLine(0,0,10,10);
 g2.drawLine(0,10,10,0);
 icons.put("cross",new ImageIcon(img));
 img = new BufferedImage(10,10, BufferedImage.TYPE_INT_ARGB);
 g2=(Graphics2D)(img.getGraphics());
 g2.setColor(Color.GREEN);
 g2.drawOval(1,1,8,8);
 icons.put("circle",new ImageIcon(img));
}

Hightlight text in JTable Cells on Tab

Hi,
I have built a Java front end for AAirlines. It has all the functionality that is expected of it, except the user wishes to have the contents of each cell highlighted on a Tab(Setting the cursor to the end of the text seems to be the default which I am unable to override). Any ideas greatly appreciated.
Anil

Hi,
I followed your suggestion and wrote the following code to use the DefaultCellEditor. It doesnt seem to work. My DataModel for JTable is an AbstractTableModel subclass. Is there anything I need to do in the model too???
If you have any code snippets that actually does the job of highlighting a cell on tabbing, it will be a great help.
final JTextField tf = new JTextField("xyz");
tf.selectAll();
TableCellEditor editor = new DefaultCellEditor(tf){
public Object getCellEditorValue(){
return tf.getText();
public Component getComponent()
return tf;
public boolean isCellEditable(EventObject eo)
return true;
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column){
tf.setText((String) value);
tf.requestFocus();
tf.selectAll();
return tf;
jTable1.setDefaultEditor(String.class, editor);
Anil

Traverse JTable cells with arrow keys?

I want to be able to use arrow keys to travel in the matrix. But I want to restrict entering column 0. That is, the user should not be able to enter column 0, with the arrow keys (and neither using the mouse). Anyone have hints how to do this?

Well, the problem is that I have a viewport into a big matrix. The user is able to scroll the viewport around.
I must be able to figure out if the user is pressing the arrow buttons to go outside the viewport, because then I have to change the viewport. Somewhere, there is a class that knows the current cell that is highlighted. I must check that class to see what direction the user wants to go with the highlighted cell.
And, also, the user is not allowed to enter column 0. If he wants to go column 0, then the viewport will be scrolled.
So my question is, which class knows which cell is highlighted? The Jtable, probably? Which methods?

JTable cell with colored string

Hi,
How can I make colored string in cell (string with different colors) ?

Supposing you haven't used your own customized cell renderers, the following code must work..
((DefaultTableCellRenderer)<<yourtable>>.getCellRenderer(<row>, <col>)).setForeground(Color.BLUE);
This will paint all the cells of same type as cell(<row>, <col>) in blue.
If you want only certain cells in your table to be painted in a perticular colour, you may have to write a customized renderer yourself, extending the javax.swing.table.DefaultTableCellRenderer class, and override its getTableCellRendererComponent(...) method as per your required functionality.

JTable Cells with different Color according to value

Pls help I want to be able to display all rows (students) that paid more than 20 naira in Green
else display rows (student) that paid < 20 naira in red
But at the moment it is displaying everything in green why?
tmp is the variable
Code would help pls!
class TestRenderer extends DefaultTableCellRenderer
public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row, int column)
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
if (row > 0)
for (int i =0; i < table.getRowCount(); i++)
String tmpString = (String) table.getValueAt(i,3);
if (tmpString != null)
double tmp = Double.parseDouble(tmpString);
if (tmp > 20)
System.out.println("Variable is "+tmp);
setBackground( Color.green );
else
setBackground( Color.red );
return this;

Get rid of that loop
String tmpString = (String) table.getValueAt(row,3);

Editing/Assigning each JTable cell with a unique JComboBox

unique JComboBox meaning the contents of each will be different for each cell.
anyone have any ideas how to go about doing this?
Seems like you can set a DefaultCellEditor for each column only.

problem sorted, used a modified version of http://forum.java.sun.com/thread.jspa?forumID=57&threadID=327150
where i used my underlying datamodel instead of the predefined combo boxes in that example

JTable's Cell navigation with TAB

Dear ALL
I have face one problem in JTable's cell navigation with TAB. The problem as describe bellow.
I have two columns NAME and ADDRESS. Set focus on ADDRESS column's first cell. now if i am press tab key then focus controll comes on second cell which is the ADDRESS column. At the end of row controll comes on first row second column that means focus on ADDRESS column's first cell.
Please give me some hints.
Thanks in advance.
Amit

Your description doesn't make any sense (to me at least) so I don't know what your problem is or what you are asking to be changed.
The normal tab order is Left to Right, Top to Bottom. So if the focus is at the top/left normal tabbing would be:
Row 0, Column 0 (name 0)
Row 0 Column 1 (address 0)
Row 1, Column0 (name 1)
Row 1, Column 1 (address 1)
Row 2, Column 0 (name 2)
Row 2, Column 1 (address 2)
Your question seems to imply that your tab from address to addreass, which doesn't make sense.
"Set focus on ADDRESS column's first cell. now if i am press tab key then focus controll comes on second cell which is the ADDRESS "

Tab transversal while using JTextArea as a JTable cell editor..

I'm working on a project that will use a JTable with a JTextArea cell editor to create a chart for classroom scheduling. Searching on Google, I found a way to use a JTextArea as a cell editor and render the cell properly. However, when editing a cell, pressing the Tab key inserts a tab, rather than leaving the cell and going to the next one, as happens with just a regular JTable. In fact, none of the keyboard shortcuts that work on a JTable work once the JTextArea cell editor is used. Does anyone know of any way to resolve this? Below is some code I'm using to create a sample GUI, just to verify that I can do this. Another question is would it be easier to use a bunch of JLabels and JTextAreas, remove the padding from those JTextAreas, and try to allow for Tab transversals between stand-alone JTextAreas, rather than JTextAreas as JTable cell editors?
Thanks!
package edu.elon.table;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class GUI
 private JFrame frame;
 private String[] columnNames = {"Classroom", "8:00-9:10", "9:25-10:35",
 "10:50-12:00", "12:15-1:25", "1:40-2:50", "1:40-3:20 (MW)",
 "3:35-5:15 (MW)", "5:30-7:10 (MW)"};
 private Object[][] data = {columnNames,
 {"ALAM 201 (42)\nENG 110 LAB", "", "", "", "", "", "", "", ""},
 {"ALAM 202 (42)\nDP/DVD", "", "", "", "", "", "", "", ""},
 {"ALAM 203 (38)\nDP/DVD", "", "", "", "", "", "", "", ""},
 {"ALAM 205 (40)\n", "", "", "", "", "", "", "", ""},
 {"ALAM 206 (39)\nSINK, TV/VCR", "", "", "", "", "", "", "", ""},
 {"ALAM 207 (40+)\nDP/DVD", "", "", "", "", "", "", "", ""},
 {"ALAM 214 (38)\nTV/VCR", "", "", "", "", "", "", "", ""},
 {"ALAM 215 (42)\nTV/VCR", "", "", "", "", "", "", "", ""},
 {"ALAM 216 (42)\n", "", "", "", "", "", "", "", ""},
 {"ALAM 301 (40)\nTV/VCR", "", "", "", "", "", "", "", ""},
 {"ALAM 302 (38)\nDP/DVD", "", "", "", "", "", "", "", ""},
 {"ALAM 304 (35)\nFRENCH", "", "", "", "", "", "", "", ""},
 {"ALAM 314 (30)\nDP, PSY, COMPUTER ASSISTED", "", "", "", "", "", "",
 {"ALAM 315 (40)\nPC LAB, DP/DVD", "", "", "", "", "", "", "", ""}};
 private JTable table;
 public GUI()
 frame = new JFrame();
 table = new JTable(data, columnNames);
 table.setRowHeight(table.getRowHeight()*2);
 TableColumnModel cModel = table.getColumnModel();
 TextAreaRenderer renderer = new TextAreaRenderer();
 TextAreaEditor editor = new TextAreaEditor();
 for (int i = 0; i < cModel.getColumnCount(); i++)
 cModel.getColumn(i).setCellRenderer(renderer);
 cModel.getColumn(i).setCellEditor(editor);
 frame.setLayout(new GridLayout(1,0));
 frame.add(table);
 frame.pack();
 frame.setVisible(true);
public static void main (String[] args)
GUI gui = new gui();
* Written by Dr. Heinz Kabutz, found through online newsletter via Google.
class TextAreaRenderer extends JTextArea
implements TableCellRenderer {
private final DefaultTableCellRenderer adaptee =
new DefaultTableCellRenderer();
/** map from table to map of rows to map of column heights */
private final Map cellSizes = new HashMap();
public TextAreaRenderer() {
setLineWrap(true);
setWrapStyleWord(true);
public Component getTableCellRendererComponent(//
JTable table, Object obj, boolean isSelected,
boolean hasFocus, int row, int column) {
// set the colours, etc. using the standard for that platform
adaptee.getTableCellRendererComponent(table, obj,
isSelected, hasFocus, row, column);
setForeground(adaptee.getForeground());
setBackground(adaptee.getBackground());
setBorder(adaptee.getBorder());
setFont(adaptee.getFont());
setText(adaptee.getText());
// This line was very important to get it working with JDK1.4
TableColumnModel columnModel = table.getColumnModel();
setSize(columnModel.getColumn(column).getWidth(), 100000);
int height_wanted = (int) getPreferredSize().getHeight();
addSize(table, row, column, height_wanted);
height_wanted = findTotalMaximumRowSize(table, row);
if (height_wanted != table.getRowHeight(row)) {
table.setRowHeight(row, height_wanted);
return this;
private void addSize(JTable table, int row, int column,
int height) {
Map rows = (Map) cellSizes.get(table);
if (rows == null) {
cellSizes.put(table, rows = new HashMap());
Map rowheights = (Map) rows.get(new Integer(row));
if (rowheights == null) {
rows.put(new Integer(row), rowheights = new HashMap());
rowheights.put(new Integer(column), new Integer(height));
* Look through all columns and get the renderer. If it is
* also a TextAreaRenderer, we look at the maximum height in
* its hash table for this row.
private int findTotalMaximumRowSize(JTable table, int row) {
int maximum_height = 0;
Enumeration columns = table.getColumnModel().getColumns();
while (columns.hasMoreElements()) {
TableColumn tc = (TableColumn) columns.nextElement();
TableCellRenderer cellRenderer = tc.getCellRenderer();
if (cellRenderer instanceof TextAreaRenderer) {
TextAreaRenderer tar = (TextAreaRenderer) cellRenderer;
maximum_height = Math.max(maximum_height,
tar.findMaximumRowSize(table, row));
return maximum_height;
private int findMaximumRowSize(JTable table, int row) {
Map rows = (Map) cellSizes.get(table);
if (rows == null) return 0;
Map rowheights = (Map) rows.get(new Integer(row));
if (rowheights == null) return 0;
int maximum_height = 0;
for (Iterator it = rowheights.entrySet().iterator();
it.hasNext();) {
Map.Entry entry = (Map.Entry) it.next();
int cellHeight = ((Integer) entry.getValue()).intValue();
maximum_height = Math.max(maximum_height, cellHeight);
return maximum_height;
* Written by Dr. Heinz Kabutz, found through online newsletter via Google.
class TextAreaEditor extends DefaultCellEditor
public TextAreaEditor() {
 super(new JTextField());
final JTextArea textArea = new JTextArea();
textArea.setWrapStyleWord(true);
textArea.setLineWrap(true);
JScrollPane scrollPane = new JScrollPane(textArea);
scrollPane.setBorder(null);
editorComponent = scrollPane;
delegate = new DefaultCellEditor.EditorDelegate() {
public void setValue(Object value)
textArea.setText((value != null) ? value.toString() : "");
public Object getCellEditorValue()
return textArea.getText();
}

Using the KeyEvent manager and playing around with the JTextArea, I was able to get a JTable using JTextAreas as the cell editors that worked very close to the way the regular JTable works. You have to hit Tab twice to shift focus to another cell, or hit Tab once and then an arrow key. Also, Alt-Enter will allow you to enter a cell for editing. All of the changes were made to the TextAreaEditor class, which should now read as follows:
class TextAreaEditor extends DefaultCellEditor implements KeyListener
 private int lastKeyCode;
 public TextAreaEditor(final JTable table) {
 super(new JTextField());
 lastKeyCode = KeyEvent.CTRL_DOWN_MASK;
 final JTextArea textArea = new JTextArea();
 textArea.setWrapStyleWord(true);
 textArea.setLineWrap(true);
 textArea.addKeyListener(this);
 textArea.setFocusable(true);
 textArea.setFocusAccelerator((char) KeyEvent.VK_ENTER);
 JScrollPane scrollPane = new JScrollPane(textArea);
 scrollPane.setBorder(null);
 scrollPane.setFocusable(false);
 editorComponent = scrollPane;
 delegate = new DefaultCellEditor.EditorDelegate() {
 public void setValue(Object value) {
 textArea.setText((value != null) ? value.toString() : "");
 public Object getCellEditorValue() {
 return textArea.getText();
 public void keyTyped(KeyEvent ke)
 // TODO Auto-generated method stub
 public void keyPressed(KeyEvent ke)
 if (ke.getKeyCode() == KeyEvent.VK_TAB)
 ke.consume();
 KeyboardFocusManager.getCurrentKeyboardFocusManager()
 .focusNextComponent();
 return;
 if (ke.getKeyCode() == KeyEvent.VK_TAB && ke.isShiftDown())
 ke.consume();
 KeyboardFocusManager.getCurrentKeyboardFocusManager()
 .focusPreviousComponent();
 return;
 if ((lastKeyCode == KeyEvent.CTRL_DOWN_MASK) &&
 (ke.getKeyCode() == KeyEvent.VK_ENTER))
 ke.consume();
 editorComponent.requestFocus();
 else
 lastKeyCode = ke.getKeyCode();
 public void keyReleased(KeyEvent ke)
 // TODO Auto-generated method stub
 }

JTable row selection with tab key

Helo.
I'm having a problem selecting rows in a JTable. The JTable is with single row selection and without column and cell selection. When I press <tab> the selection changes to another cell, and I wanna it to change to the other row of the table, can anyone help me? I think this is a easy one and I haven�t found a way to do it. I�m using JBuilder for the development.

The default Action for the Tab KeyStroke is to move focus to the next cell.
The default Action for the Enter KeyStroke is to move focus to the next line.
So this functionality is already available in JTable by default.
If you want to Tab Key to work the same way as the Enter Key then you need to map the Tab Key to use the Action assigned to the Enter Key.
This [url http://forum.java.sun.com/thread.jsp?forum=57&thread=505866]posting shows how you can reassign an Action for a given KeyStroke.
For more information on this topic read this section from the Swing tutorial on [url http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html]How to Use Key Bindings.

Access table cells using tab key with iterators

Hi,
I use a tableview with iterator and allow users to mouseclick certain column cells. I capture these user interactions using server event "onCellClick". But I cannot access these cells using tab key instead of mouse click. But tab key is a must for visibly challenged users. Is there any way to access table cells using tab keys (with iterators)?
I use icons in those cells to replace check box and change the icons to differentiate checked/unchecked status.

Hi Craig,
Thanks for your effort.
But I was able to solve my problem. I don't think I gave all the information to simulate my problem in your environment. I used images in certain table cells and was not able to access those cells using tab key or access key. Tag <img> doesn't have the attributes tabindex and access key.
I solved the problem by surrounding the <img> by anchor tag <A>, which has both attributes. I did these changes within the iterator method RENDER_CELL_START using CL_BSP_BEE_TABLE.
In the event handling, I had to do separate processing for mouse click event and key press event for those cells.
For visibly challenged users:
They can access those cells by tab key or access key and the key press event is used to capture when they hit enter key.
So this problem is irrelevant to service packages (SP38,..).

How to blink the text with in JTable Cell?

Hi Friends,
I am relatively new to Java Swings. I have got a requirement to blink the text with in the JTable cell conditionally. Please help with suggestions or sample codes if any.
Thanks in Advance.
Satya.

I believe Swing components support HTML tags.
So you might be able to wrap your text in <BLINK>I am blinking !</BLINK>
tags.
If that doesn't work, you probably have to create your own cell renderer, and force a component repaint every second or so... messy.
regards,
Owen

Problem using an editable JComboBox as JTable cell editor

Hi,
i have a problem using an editable JComboBox as cell editor in a JTable.
When i edit the combo and then I press the TAB or ENTER key then all works fine and the value in the TableModel is updated with the edited one, but if i leave the cell with the mouse then the value is not passed to the TableModel. Why ? Is there a way to solve this problem ?
Regards
sergio sette

if (v1.4) [url
http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JTa
le.html#setSurrendersFocusOnKeystroke(boolean)]go
hereelse [url
http://forum.java.sun.com/thread.jsp?forum=57&thread=43
440]go here
Thank you. I've also found this one (the first reply): http://forum.java.sun.com/thread.jsp?forum=57&thread=124361 Works fine for me.
Regards
sergio sette

Button to change bg-color in JTable cell

Hello!
I would like to change the background color of a cell with a klick on a button.
There will be 3 colors, and the selected cell are the only one thats going to change.
How do I do that?
Heres my code:
import javax.swing.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Rectangle;
import javax.swing.JButton;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;
public class Kinna extends JFrame {
     private static final long serialVersionUID = 1L;
     private JPanel jContentPane = null;
     private JTabbedPane jTabbedPane = null;
     private JScrollPane jScrollPane = null;
     private JTable jTable = null;
     private JButton jButtonRed = null;
     private JButton jButtonGreen = null;
     private JButton jButtonBlue = null;
     private JButton jButtonNewWeek = null;
     private JButton jButtonDelWeek = null;
      * This method initializes jTabbedPane
      * @return javax.swing.JTabbedPane
     private JTabbedPane getJTabbedPane() {
          if (jTabbedPane == null) {
               jTabbedPane = new JTabbedPane();
               jTabbedPane.setBounds(new Rectangle(105, 45, 545, 488));
               jTabbedPane.addTab(null, null, getJScrollPane(), null);
          return jTabbedPane;
      * This method initializes jScrollPane
      * @return javax.swing.JScrollPane
     private JScrollPane getJScrollPane() {
          if (jScrollPane == null) {
               jScrollPane = new JScrollPane();
               jScrollPane.setViewportView(getJTable());
          return jScrollPane;
      * This method initializes jTable
      * @return javax.swing.JTable
     private JTable getJTable() {
          if (jTable == null) {
               Object[] head = {"Namn", "M�ndag", "Tisdag", "Onsdag", "Torsdag", "Fredag"};
               Object[][] data = {{"Niklas", "9-15", "9-15", "9-15", "9-15","9-15"},
                                        {"Niklas", "9-15", "9-15", "9-15", "9-15","9-15"}};
               jTable = new JTable(data, head);
                  // This table shades every other column yellow
          return jTable;
      * This method initializes jButtonRed
      * @return javax.swing.JButton
     private JButton getJButtonRed() {
          if (jButtonRed == null) {
               jButtonRed = new JButton("R�d");
               jButtonRed.setBounds(new Rectangle(15, 30, 76, 31));
               jButtonRed.setText("R�d");
               jButtonRed.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
          return jButtonRed;
      * This method initializes jButtonGreen
      * @return javax.swing.JButton
     private JButton getJButtonGreen() {
          if (jButtonGreen == null) {
               jButtonGreen = new JButton("R�d");
               jButtonGreen.setBounds(new Rectangle(15, 75, 76, 31));
               jButtonGreen.setText("Gr�n");
          return jButtonGreen;
      * This method initializes jButtonBlue
      * @return javax.swing.JButton
     private JButton getJButtonBlue() {
          if (jButtonBlue == null) {
               jButtonBlue = new JButton("R�d");
               jButtonBlue.setBounds(new Rectangle(15, 120, 76, 31));
               jButtonBlue.setText("Bl�");
          return jButtonBlue;
      * This method initializes jButtonNewWeek
      * @return javax.swing.JButton
     private JButton getJButtonNewWeek() {
          if (jButtonNewWeek == null) {
               jButtonNewWeek = new JButton();
               jButtonNewWeek.setBounds(new Rectangle(270, 0, 91, 31));
               jButtonNewWeek.setText("Ny Vecka");
               jButtonNewWeek.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                         System.out.println("actionPerformed()");
                         int i = getJTabbedPane().getSelectedIndex() + 1;
                         String tab = "Index: " + i;
                         getJTabbedPane().addTab(tab, new JLabel("Hello"));
                         getJTabbedPane().setSelectedIndex(getJTabbedPane().getTabCount()-1);
          return jButtonNewWeek;
      * This method initializes jButtonDelWeek
      * @return javax.swing.JButton
     private JButton getJButtonDelWeek() {
          if (jButtonDelWeek == null) {
               jButtonDelWeek = new JButton();
               jButtonDelWeek.setBounds(new Rectangle(375, 0, 121, 31));
               jButtonDelWeek.setText("Ta bort vecka");
               jButtonDelWeek.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(java.awt.event.ActionEvent e) {
                         System.out.println("actionPerformed()");
                         getJTabbedPane().removeTabAt(getJTabbedPane().getSelectedIndex());
          return jButtonDelWeek;
      * @param args
     public static void main(String[] args) {
          SwingUtilities.invokeLater(new Runnable() {
               public void run() {
                    Kinna thisClass = new Kinna();
                    thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    thisClass.setVisible(true);
      * This is the default constructor
     public Kinna() {
          super();
          initialize();
      * This method initializes this
      * @return void
     private void initialize() {
          this.setSize(670, 580);
          this.setContentPane(getJContentPane());
          this.setTitle("JFrame");
      * This method initializes jContentPane
      * @return javax.swing.JPanel
     private JPanel getJContentPane() {
          if (jContentPane == null) {
               jContentPane = new JPanel();
               jContentPane.setLayout(null);
               jContentPane.add(getJTabbedPane(), null);
               jContentPane.add(getJButtonRed(), null);
               jContentPane.add(getJButtonGreen(), null);
               jContentPane.add(getJButtonBlue(), null);
               jContentPane.add(getJButtonNewWeek(), null);
               jContentPane.add(getJButtonDelWeek(), null);
          return jContentPane;
} // @jve:decl-index=0:visual-constraint="29,25"

If you have a different color for every cell in the table, then maybe it would be easier to store a custom Object in the TableModel that has two pieces of information:
a) the text to be displayed
b) the background color of the text.
Then you can write a custom renderer that uses both pieces of information to renderer the cell correctly.
Here is an untested example of what the custom renderer might look like:
class ColorRenderer extends DefaultTableCellRenderer
     public Component getTableCellRendererComponent(
               JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
          super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
          CustomObject custom = (CustomObject)value;
          setText( custom.getText() );
          if (!isSelected)
               setBackground( custom.getBackground() );
          return this;
}

Skipping jTable cells with tab

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