Jtable with MultiRowHeader and multiCell

Dear Developers,
I saw there is a sample code:
http://www2.gol.com/users/tame/swing/examples/JTableExamples7.html
about the Multiple Row Hearder example, however I can't change the rowHeight nor the column width.
I want to create like the following complex table:
http://www.geocities.com/javaxml8/complextable.htm
I tried to overwrite the SetRowHeight, but the row height still the same.
Thanks in advance

After struggling with the examples like you I finally made it by doing as follows:
DefaultTableModel() dm = new DefaultTableModel() {
public Class getColumnClass(int columnIndex) {
return String.class;
dm.addRow(new Object[]{"\n\n"});
AND YOU'RE DONE !!!!!!!!!!!!!!!!!!!

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How to keep the first row fixed in a JTable, with sorting, and bellow the headers ?

I am trying to change the following code so then the fixed rows will stay on top(but below the headers!), but when I change getContentPane().add(fixedScroll, BorderLayout.SOUTH); to getContentPane().add(fixedScroll, BorderLayout.NORTH); it stays above the headers. How can I put the first rows on top, but below the headers ? Thanks.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
* @version 1.0 03/05/99
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Object[][] data;
Object[] column;
JTable fixedTable,table;
private int FIXED_NUM = 2;
public FixedRowExample() {
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    data = new Object[][]{
        {      "a","","","","",""},
        {      "","b","","","",""},
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        {      "","","","d","",""},
        {      "","","","","e",""},
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        return data[row][col];
      public void setValueAt(Object obj, int row, int col) {
        data[row][col] = obj;
      public boolean CellEditable(int row, int col) {
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      public int getColumnCount() { return column.length; }
      public int getRowCount() { return FIXED_NUM; }
      public Object getValueAt(int row, int col) {
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    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    table.setAutoCreateRowSorter(true);
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    fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    fixedTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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    scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
    JScrollPane fixedScroll = new JScrollPane( fixedTable ) {
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        System.exit(0);
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Sorry, this code missed a very important line:
table.setAutoCreateRowSorter(true);
So you meant:
Object[][] header;//class atribute
header=new Object[][]{//in the constructor
            { "h","i","j","k","l","m"},
            { "h","i","j","k","l","m"}
public Object getValueAt(int row, int col) {//in the TableModel
        if (row==0){
            return header[row][col];
        else {
            return data[row][col];
I tried, but when I sort, the first row get sorted with the rest.

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JTable with custom column model and table model not showing table header

Hello,
I am creating a JTable with a custom table model and a custom column model. However the table header is not being displayed (yes, it is in a JScrollPane). I've shrunk the problem down into a single compileable example:
Thanks for your help.
import javax.swing.*;
import javax.swing.table.*;
public class Test1 extends JFrame
     public static void main(String args[])
          JTable table;
          TableColumnModel colModel=createTestColumnModel();
          TestTableModel tableModel=new TestTableModel();
          Test1 frame=new Test1();
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     static class TestTableModel extends AbstractTableModel
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               return 1;
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               return String.class;
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}Edited by: 802416 on 14-Oct-2010 04:29
added

Kleopatra wrote:
jduprez wrote:
See http://download.oracle.com/javase/6/docs/api/javax/swing/table/TableColumn.html#setHeaderValue(java.lang.Object)
When the TableColumn is created, the default headerValue is null
So, the header ends up rendered as an empty label (probably of size 0 if the JTable computes its header size based on the renderer's preferred size).nitpicking (can't resist - the alternative is a cleanup round in some not so nice code I produced recently <g>):
- it's not the JTable's business to compute its headers size (and it doesn't, the header's the culprit.) *> - the header should never come up with a zero (or near-to) height: even if there is no title shown, it's still needed as grab to resize/move the columns. So I would consider this sizing behaviour a bug.*
- furthermore, the "really zero" height is a longstanding issue with MetalBorder.TableHeaderBorder (other LAFs size with the top/bottom of their default header cell border) which extends AbstractBorder incorrectly. That's easy to do because AbstractBorder itself is badly implemented
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6459419
Thanks for the opportunity to have some fun :-)
JeanetteNo problem, thanks for the insight :)

How to print jTable with custom header and footer....

Hello all,
I'm trying to print a jTable with custom header and footer.But
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Here's the instruction on the chat...
Shannon Hickey: While the default Header and Footer support in the JTable printing won't do exactly what you're looking for, there is a straight-forward approach. You can turn off the default header/footer and then wrap JTable's printable inside another Printable. This wrapper printable would then render your custom data, and then adjust the size given to the wrapped printable
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I also once hoped for an easy way to modify a table's header and footer, but found no way.
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This made it impossible to resize columns. Works fine for me:
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableHorizontal extends JFrame
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        JTable table = new JTable(5, 10);
        table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF );
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        getContentPane().add( scrollPane );
        table.getColumnModel().getColumn(0).setPreferredWidth(10);
        table.getColumnModel().getColumn(1).setPreferredWidth(20);
        table.getColumnModel().getColumn(2).setPreferredWidth(30);
        table.getColumnModel().getColumn(3).setPreferredWidth(40);
        table.getColumnModel().getColumn(4).setPreferredWidth(50);
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}

Problem with addRow and MultiLine Cell renderer

Hi ,
Ive a problem with no solution to me .......
Ive seen in the forum and Ivent found an answer.......
The problem is this:
Ive a JTable with a custom model and I use a custom multiline cell renderer.
(becuse in the real application "way" hasnt static lenght)
When I add the first row all seem to be ok.....
when I try to add more row I obtain :
java.lang.ArrayIndexOutOfBoundsException: 1
at javax.swing.SizeSequence.insertEntries(SizeSequence.java:332)
at javax.swing.JTable.tableRowsInserted(JTable.java:2926)
at javax.swing.JTable.tableChanged(JTable.java:2858)
at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableMo
del.java:280)
at javax.swing.table.AbstractTableModel.fireTableRowsInserted(AbstractTa
bleModel.java:215)
at TableDemo$MyTableModel.addRow(TableDemo.java:103)
at TableDemo$2.actionPerformed(TableDemo.java:256)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:17
64)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abstra
ctButton.java:1817)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL
istener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5134)
at java.awt.Component.processEvent(Component.java:4931)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3639)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3165)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
at java.awt.Container.dispatchEventImpl(Container.java:1609)
at java.awt.Window.dispatchEventImpl(Window.java:1590)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
This seems to be caused by
table.setRowHeight(row,(getPreferredSize().height+2)); (line 164 of my example code)
About the model I think its ok.....but who knows :-(......
Please HELP me in anyway!!!
Example code :
import javax.swing.*;
import javax.swing.table.*;
import java.text.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class TableDemo extends JFrame {
private boolean DEBUG = true;
MyTableModel myModel = new MyTableModel();
MyTable table = new MyTable(myModel);
int i=0;
public TableDemo() {
super("TableDemo");
JButton bottone = new JButton("Aggiungi 1 elemento");
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
getContentPane().add(bottone,BorderLayout.NORTH);
getContentPane().add(scrollPane, BorderLayout.CENTER);
bottone.addActionListener(Add_Action);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
class MyTable extends JTable {
MultiLineCellRenderer multiRenderer=new MultiLineCellRenderer();
MyTable(TableModel tm)
super(tm);
public TableCellRenderer getCellRenderer(int row,int col) {
          if (col==1) return multiRenderer;
          else return super.getCellRenderer(row,col);
class MyTableModel extends AbstractTableModel {
Vector data=new Vector();
final String[] columnNames = {"Name",
"Way",
"DeadLine (ms)"
public int getColumnCount() { return 3; }
public int getRowCount() { return data.size(); }
public Object getValueAt(int row, int col) {
Vector rowdata=(Vector)data.get(row);
                                                            return rowdata.get(col); }
public String getColumnName(int col) {
return columnNames[col];
public void setValueAt (Object value, int row,int col)
     //setto i dati della modifica
Vector actrow=(Vector)data.get(row);
actrow.set(col,value);
     this.fireTableCellUpdated(row,col);
     public Class getColumnClass(int c)
          return this.getValueAt(0,c).getClass();
     public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col == 1)
return false;
else
return true;
public void addRow (String name,ArrayList path,Double dead) {
     Vector row =new Vector();
     row.add(name);
     row.add(path);
     row.add(dead);
     row.add(name); //!!!Mi tengo questo dato da utilizzare come key per andare a
     //prendere il path nella lista dei paths di Project
     //(needed as key to retrive data if name in col. 1 is changed)
     data.add(row);
     //Inspector.inspect(this);
     System.out.println ("Before firing Adding row...."+this.getRowCount());
     this.fireTableRowsInserted(this.getRowCount(),this.getRowCount());
public void delRow (String namekey)
for (int i=0;i<this.getRowCount();i++)
if (namekey.equals(this.getValueAt(i,3)))
data.remove(i);
this.fireTableRowsDeleted(i,i);
//per uscire dal ciclo
i=this.getRowCount();
public void delAllRows()
int i;
int bound =this.getRowCount();
for (i=0;i<bound;i++)
     {data.remove(0);
     System.out.println ("Deleting .."+data);
this.fireTableRowsDeleted(0,i);
class MultiLineCellRenderer extends JTextArea implements TableCellRenderer {
private Hashtable rowHeights=new Hashtable();
public MultiLineCellRenderer() {
setEditable(false);
setLineWrap(true);
setWrapStyleWord(true);
//this.setBorder(new Border(
public Component getTableCellRendererComponent(JTable table,Object value,                              boolean isSelected, boolean hasFocus, int row, int column) {
//System.out.println ("Renderer called"+value.getClass());
if (value instanceof ArrayList) {
String way=new String     (value.toString());
setText(way);
TableColumn thiscol=table.getColumn("Way");
//System.out.println ("thiscol :"+thiscol.getPreferredWidth());
//setto il size della JTextarea sulle dimensioni della colonna
//per quanto riguarda il widht e su quelle ottenute da screen per l'height
this.setSize(thiscol.getPreferredWidth(),this.getPreferredSize().height);
// set the table's row height, if necessary
//System.out.println ("Valore getPreferred.height"+getPreferredSize().height);
     if (table.getRowHeight(row)!=(this.getPreferredSize().height+2))
     {System.out.println ("Setting Row :"+row);
         System.out.println ("Dimension"+(getPreferredSize().height+2));
         System.out.println ("There are "+table.getRowCount()+"rows in the table ");
         if (row<table.getRowCount())
         table.setRowHeight(row,(getPreferredSize().height+2));
else
setText("");
return this;
/**Custom JTextField Subclass che permette all'utente di immettere solo numeri
class WholeNumberField extends JTextField {
private Toolkit toolkit;
private NumberFormat integerFormatter;
public WholeNumberField(int value, int columns) {
super(columns);
toolkit = Toolkit.getDefaultToolkit();
integerFormatter = NumberFormat.getNumberInstance(Locale.US);
integerFormatter.setParseIntegerOnly(true);
setValue(value);
public int getValue() {
int retVal = 0;
try {
retVal = integerFormatter.parse(getText()).intValue();
} catch (ParseException e) {
// This should never happen because insertString allows
// only properly formatted data to get in the field.
toolkit.beep();
return retVal;
public void setValue(int value) {
setText(integerFormatter.format(value));
protected Document createDefaultModel() {
return new WholeNumberDocument();
protected class WholeNumberDocument extends PlainDocument {
public void insertString(int offs,
String str,
AttributeSet a)
throws BadLocationException {
char[] source = str.toCharArray();
char[] result = new char[source.length];
int j = 0;
for (int i = 0; i < result.length; i++) {
if (Character.isDigit(source))
result[j++] = source[i];
else {
toolkit.beep();
System.err.println("insertString: " + source[i]);
super.insertString(offs, new String(result, 0, j), a);
ActionListener Add_Action = new ActionListener() {
          public void actionPerformed (ActionEvent e)
          System.out.println ("Adding");
          ArrayList way =new ArrayList();
          way.add(new String("Uno"));
          way.add(new String("Due"));
          way.add(new String("Tre"));
          way.add(new String("Quattro"));
          myModel.addRow(new String("Nome"+i++),way,new Double(0));
public static void main(String[] args) {
TableDemo frame = new TableDemo();
frame.pack();
frame.setVisible(true);

In the addRow method, change the line
this.fireTableRowsInserted(this.getRowCount(),this.getRowCount()); to
this.fireTableRowsInserted(data.size() - 1, data.size() - 1);Sai Pullabhotla

How to get the data from a jtable with random order??

hi everyone,
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HI Siggi,
Thank you for your reply..
I am also planning to do FM to get the data. But it is saying that the Cluster table ZES does not exist (ZES is the the standard table, in SE11 also).
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Waiting for your reply.
Thanks and Regards
Rajesh
Message was edited by:
rajesh

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Ok so I have a couple of questions. I have a JTable with a column represented as a checkbox.
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2. What is the best workaround to having draggable columns, meaning icons/checkboxes don't render if you move the columns around?
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private JPanel renderPanel = new JPanel(new BorderLayout());
private JLabel renderLbl = new JLabel("");
private JCheckBox checked = new JCheckBox();
private Icon successIcon;
private Icon errorIcon;
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boolean isSelected,
boolean hasFocus,
int row,
int column)
String columnName = table.getModel().getColumnName(column);
if (value == null)
return null;
else if ("Status".equals(columnName) && "ok".equals(value))
renderLbl.setIcon(successIcon);
renderLbl.setText("");
renderPanel.remove(checked);
else if ("Status".equals(columnName) && "error".equals(value))
renderLbl.setIcon(errorIcon);
renderLbl.setText("");
renderPanel.remove(checked);
else if ("Active".equals(columnName))
renderLbl.setText("");
renderPanel.add(checked);
renderPanel.setBackground(Color.white);
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renderLbl.setHorizontalAlignment(value instanceof Date || value instanceof Number ? JLabel.RIGHT : JLabel.LEFT);
renderLbl.setIcon(null);
renderLbl.setText(value instanceof Date ? df.format((Date)value) : value.toString());
renderLbl.setToolTipText(null);
renderPanel.setToolTipText(null);
renderPanel.remove(checked);
if (isSelected)
renderPanel.setBackground((Color)UIManager.getDefaults().get("Table.selectionBackground"));
else
renderPanel.setBackground((Color)UIManager.getDefaults().get("Table.background"));
return renderPanel;
}

Hi :) I have also worked on JTables and JCheckBoxes before. This article
helped me a lot: http://www-128.ibm.com/developerworks/java/library/j-jtable/

JTable with JToolBar inegrated

Hello.
My requirement: A swing component (JPanel, JTable...) consisting of a table and a tool bar with buttons for inserting/removing rows in the table. This component must be visually configurable in NetBeans vía 'Table contents...' dialog.
If I extend JPanel I won't be able to visually edit the table inside; if I extend JTable I don't know how to integrate the toolbar inside of it.
Any hint?
Thank you.
Antonio.

Solution:
1. Extend JPanel, e.g. JTablePanel, with BorderLayout, and add a tool bar (north) and a container (center) where the table will be placed, e.g., private JPanel tablePanel;.
2. Create a public method that returns that container where the table will be placed, e.g.: public JPanel getTablePanel();3. Create a BeanInfo for your table panel: JTablePanelBeanInfo. You can return the defaults for all of the methods but getBeanDescriptor should look like this:
    @Override
    public BeanDescriptor getBeanDescriptor() {
        BeanDescriptor beanDescriptor = new BeanDescriptor(com.yourpackage.JTablePanel.class, null );
        beanDescriptor.setValue("containerDelegate", "getTablePanel");
        return beanDescriptor;
    }The point here is setting the value "containerDelegate".
4. Compile everything and create a new BeanForm based on JTablePanel and put your table instance inside the form by dragging it from the palette.
5. Now you can visually customize your table, improving reusability and productivity in your project.
Reference:
[How do I create a custom container bean?|http://wiki.netbeans.org/FaqFormCustomContainerBean]

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So in MyTable.setCellComponents(), there is this:
spinnerEditor = new SpinnerEditor(this, defaultTableModel);
modelColumn.setCellEditor(spinnerEditor);
If the table has n rows, are n SpinnerEditors created, or just 1?
If 1, do n need to be created and if so, how?
public class MyTable extends JTable implements ItemListener {
     private DefaultTableModel defaultTableModel;
     private Vector<Object> columnNameVector;
     private JComboBox jComboBox;
     private SpinnerEditor spinnerEditor;
     private final int COMBO_BOX_COLUMN = 0;
     final static int SPINNER_COLUMN = 1;
     public static String SMALL = "Small";
     public String LARGE = "Large";
     private final String[] SMALL_LARGE = {
               SMALL,
               LARGE };
     public MyTable(String name, Object[][] variableNameArray, Object[] columnNameArray) {
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          // need column names in order to make copy of table model
          for (Object object : columnNameArray) {
               columnNameVector.add(object);
          defaultTableModel = new DefaultTableModel(variableNameArray, columnNameArray);
          this.setModel(defaultTableModel)     ;
          setCellComponents();
          setListeners();
     private void setCellComponents() {
          // combo box column -----------------------------------------------
          TableColumn modelColumn = this.getColumnModel().getColumn(COMBO_BOX_COLUMN);
          jComboBox = new JComboBox(SMALL_LARGE);
          // set default values
          for (int row = 0; row < defaultTableModel.getRowCount(); row++) {
               defaultTableModel.setValueAt(SMALL_LARGE[0], row, COMBO_BOX_COLUMN);
          modelColumn.setCellEditor(new DefaultCellEditor(jComboBox));
          DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
          renderer.setToolTipText("Click for small/large"); // tooltip
          modelColumn.setCellRenderer(renderer);
          // index spinner column ------------------------------------------------------------
          modelColumn = this.getColumnModel().getColumn(SPINNER_COLUMN);
          spinnerEditor = new SpinnerEditor(this, defaultTableModel);
          modelColumn.setCellEditor(spinnerEditor);
          renderer = new DefaultTableCellRenderer();
          renderer.setToolTipText("Click for index value"); // tooltip
          modelColumn.setCellRenderer(renderer);
     private void setListeners() {
          jComboBox.addItemListener(this);
     @Override
     public void itemStateChanged(ItemEvent event) {
          // set spinner values depending on small or large
          String smallOrLarge = (String)event.getItem();
          if (this.getEditingRow() != -1 && this.getEditingColumn() != -1) {
               spinnerEditor.setValueRange(smallOrLarge);
     public static void main(String[] args) {
          try{
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch (Exception e){
               e.printStackTrace();
          String[] columnNameArray = {"JComboBox", "JSpinner"};
          Object[][] dataArray = {
                    {"", "0"},
                    {"", "0"},
                    {"", "0"},
          final MyTable myTable = new MyTable("called from main", dataArray, columnNameArray);
          final JFrame frame = new JFrame();
          frame.getContentPane().add(new JScrollPane(myTable));
          frame.setTitle("My Table");
          frame.setPreferredSize(new Dimension(200, 125));
          frame.addWindowListener(new WindowAdapter(){
               @Override
               public void windowClosing(WindowEvent e) {
          frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          frame.setLocation(800, 400);
          frame.pack();
          frame.setVisible(true);
public class SpinnerEditor extends AbstractCellEditor implements TableCellEditor {
     private JComponent parent;
     private DefaultTableModel defaultTableModel;
     private final JSpinner spinner = new JSpinner();
     private String[] spinValues;
     private int row;
     private int column;
     public SpinnerEditor(JTable parent, DefaultTableModel defaultTableModel ) {
          super();
          this.parent = parent;
          this.defaultTableModel = defaultTableModel;
          setValueRange(MyTable.SMALL);
          // update every time spinner is incremented or decremented
          spinner.addChangeListener(new ChangeListener(){
               public void stateChanged(ChangeEvent e) {
                    String value = (String) spinner.getValue();
                    System.out.println ("SpinnerEditor.stateChanged(): " + value);
                    setValue(value);
     private void setValue(String value) {
          // save to equation string
          System.out.println ("SpinnerEditor.setValue(): " + value + " at (" + row + ", " + MyTable.SPINNER_COLUMN + ")");
          ((JTable) parent).setValueAt(spinner.getValue(), this.row, this.column);
     @Override
     public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)      {
          System.out.println ("SpinnerEditor.getTableCellEditorComponent(): row: " + row + "\tcolumn: " + column);
          System.out.println ("SpinnerEditor.getTableCellEditorComponent(): value: " + value);
          this.row = row;
          this.column = column;
          return spinner;
     @Override
     public boolean isCellEditable(EventObject evt) {
          return true;
     // Returns the spinners current value.
     @Override
     public Object getCellEditorValue() {
          return spinner.getValue();
     @Override
     public boolean stopCellEditing() {
          System.out.println("SpinnerEditor.stopCellEditing(): spinner: " + spinner.getValue() + " at (" + this.row + ", " + this.column + ")");
          ((JTable) parent).setValueAt(spinner.getValue(), this.row, this.column);
          return true;
     public void setValueRange(String smallOrLarge) {
          System.out.println ("SpinnerEditor.setValueRange for " + smallOrLarge);
          final int ARRAY_SIZE = 50;
          if (MyTable.SMALL.equals(smallOrLarge)) {
               final int MIN_SPIN_VALUE = 0;
               final int MAX_SPIN_VALUE = 49;
               //System.out.println ("SpinnerEditor.setValueRange(): [" + MIN_SPIN_VALUE + ".." + MAX_SPIN_VALUE + "]");
               spinValues = new String[ARRAY_SIZE];
               for (int i = MIN_SPIN_VALUE; i <= MAX_SPIN_VALUE; i++) {
                    spinValues[i] = new String(Integer.toString(i));
          else { // large
               final int MIN_SPIN_VALUE = 50;
               final int MAX_SPIN_VALUE = 99;
               //System.out.println ("SpinnerEditor.setValueRange(): [" + MIN_SPIN_VALUE + ".." + MAX_SPIN_VALUE + "]");
               spinValues = new String[ARRAY_SIZE];
               for (int i = 0; i <ARRAY_SIZE; i++) {
                    spinValues[i] = new String(Integer.toString(MIN_SPIN_VALUE + i));
               //for (int i = 0; i <ARRAY_SIZE; i++) {
               //     System.out.println ("spinValues[" + i + "] = " + spinValues);
          System.out.println ("SpinnerEditor.setValueRange(): [" + spinValues[0] + ".." + spinValues[ARRAY_SIZE-1] + "]");
          // set model
          spinner.setModel(new SpinnerListModel(java.util.Arrays.asList(spinValues)));

However, it sets the range not only for the row in which the combo box was clicked, but all rows. Yes, because a single editor is used by the column.
One solution is to create two editors, then you override the getCellEditor(...) method to return the appropriated editor. Something like:
If (column == ?)
    if (smallOrLarge)
      return the small or large spinner editor
    else
       return the large spinner editor
else
    return super.getCellEditor(...);

How do I create a jtable with horizontalScroll bar,plz help me!

I created a jtable component,Because my table's columns has 50 items,I must need a horizontalScroll Bar.
but I find the horizontalScroll don't display,when I add record to the jtable,the verticalScroll Bar is showed.How do I create a jtable with horizontalScroll bar,can u help me!
thank you in advance!

Hi,
This piece of code will help :
     //Get the Component Adapter for taking action against resizing of
//of Panel
ComponentListenerAdapter componentAdapter =
new ComponentListenerAdapter()
//Get the scrollbar or remove the scrollbar upon resizing
protected void resizingAction()
Container tableParent = table.getParent();
if (tableParent instanceof JViewport)
//Check if the width of the Table Parent Container
//is less than the Preferred Size of the Table
if (tableParent.getSize().getWidth() <
table.getPreferredSize().getWidth())
//Yes it is
//Remove the Auton Resize Function and get the
//Scrollbar
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF );
else
//No it is not
//Get the Auto Resize functionality back in place
table.setAutoResizeMode(
JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS);
//Add the component Adapter to the Table Header
table.getTableHeader().addComponentListener(componentAdapter);
private abstract class ComponentListenerAdapter
implements ComponentListener
          * The <code>componentHidden<code> method has no implementation
          * @param event The Event occured whenever the Component is Hidden
          public void componentHidden(ComponentEvent event)
               //No Implementaion - Intentially Left Blank
          * The <code>componentShown</code> method has no implementation
          * @param event The Event occured whenever the Component is Shown
          public void componentShown(ComponentEvent event)
               //No Implementaion - Intentially Left Blank
          * The <code>componentMoved</code> method has no implementation
          * @param event The Event occured whenever the Component is Moved
          public void componentMoved(ComponentEvent event)
               //No Implementaion - Intentially Left Blank
          * The <code>componentResized</code> method is invoked whenever the
          * component is resized. The resizing action will set the columns and
          * scrollbar to act properly
          * @param event The Event occured whenever the Component is Resized
          public void componentResized(ComponentEvent event)
               resizingAction();
* Subclasses of this override this method to determine what is to be
* done once the Component has been Resized
protected abstract void resizingAction();
Hope this will solve all your JTable horizontal resizing problems
--j

JTable with JPanel form as cell renderer/editor

I have a JTable that uses a custom cell editor/renderer. The cell editor/renderer is a JPanel form with labels and text panes. As the user edits the information, I adjust the table row height (setRowHeight) and the JPanel layout manager updates the layout on the cell editor. This all seems to work fine. However, when the user exists the cell and the cell renderer is shown, it has the correct new row height but has not been correctly layed-out for the new row height. How do I force my cell renderer to be re-layout after the editor closes?

That does not seem to work. I have done the following:
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int r, int c)
this.table = (EditorTable) table;
row = r;
column = c;
if (isSelected)
setBackground (Preferences.selectedRowBgColor);
else
setBackground (formBg);
// constructs the panel components
setCellValue (value);
revalidate();
return (this);

Custom JTable cell editors and persistence

I have a JTable with an underlying data model (an extension of AbstractTableModel) that uses custom cell editors in the last column. The cell editor in that column, for a given row, depends on the value selected in another column of the same row. The cell editors include text, date, list, and tree editors (the last one in a separate dialogue). The number of rows is changeable.
I have need to persist the data for a populated table from time to time, for restoration later on. I've achieved that, such that the data model is recreated, the table appears correct, and the appropriate cell editors activated (by creating new instances of the editors' classes).
However, my problem is that the (custom) cell editors do not reflect the data in the model when editing mode is begun the first time after restoration. Eg. the text editor is always empty, the list editor shows the first item, and no node is selected in the tree editor.
If I've restored the model correctly, should the editors properly reflect the underlying data when they are set to editing mode?
I suspected not, and thus tried to explicitly 'set' the correct values immediately after each editor is recreated ... but to no avail.
Does anyone have any thoughts, or experience with something similar? I'm happy to supply code.

You can use html tags within Swing, so I think you can do the following:
* MyRenderer.java
* Created on 26 April 2007, 10:27
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package newpackage;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.TableCellRenderer;
* @author CS781RJ
public class MyRenderer extends JLabel implements TableCellRenderer
    public MyRenderer()
        setHorizontalTextPosition(SwingConstants.RIGHT);
        setIconTextGap(3);
        setOpaque(true);
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean cellHasFocus, int row, int column)
        if (isSelected)
            setBackground(table.getSelectionBackground());
            setForeground(table.getSelectionForeground());
        else
            setBackground(table.getBackground());
            setForeground(table.getForeground());
        if (value instanceof String)
            if ((value != null) && (value.toString().length() > 0))
                System.out.println("Value: " + value.toString());
                setFont(new java.awt.Font("Tahoma", 0, 11));
                setText("<html>" + value.toString().replaceAll("\n", "<br>") + "</html>");
        return this;
}In the class that has the JTable, use the code AFTER declaring the values, columns, etc:
jTable1.getColumnModel().getColumn(0).setCellRenderer(new MyRenderer());
jTable1.setValueAt("Riz\nJavaid", 0, 0);One thing I haven't done is to resize the cell heights, make sure this is done.
Hope this helps
Riz

Need help serializing an AbstractTableModel for a JTable with cell editing.

Fun times are ahead. Here we go!
I have a JTable that contains data I'd like to serialize out to a file to be restored and viewed later.
So I tried saving the AbstractTableModel subclass out to a file. Whenever I do this, I get the following error message:
java.io.NotSerializableException: javax.swing.JTable$CellEditorRemover
Now I know for fact that serializing an AbstractTableModel that was installed in a JTable without cell editing works just fine (my old code did exactly that). As a result, I think that the code that handles events in the AbstractTableModel contains references back out to the JTable, which causes the JTable to be saved no matter what (even though I'm just interested in saving the TableModel only). It causes a bigger file than normal, but file size is not an issue. The only issue I have is that CellEditorRemover (an undocumented inner class of JTable), which is automatically installed for JTables with editable cells, is not serializable.
This leads to the following questions:
1. Is there a way to avoid serialization/deserialization of the CellEditorRemover inner class of JTable?
2. Is there a way to save an AbstractTableModel without saving all of the event listeners associated with it?
I think an answer to either of these questions would go a long way towards solving my problem. Otherwise, I'll resign myself to weeping silently in the corner of my office.
Thanks!

I would suggest that if you can you only save the
data... but i would do this by using the
externalizable interface.
What you will need to do is have the
writeExternal(ObjectOutputStream out) and
readExternal(ObjectOutputStream out) methods in your
class. These will be responsiable for saving the
data.
Here's an example of what you can do in these
methods... this is just a little tidbit from a program
i've written.public void writeExternal(ObjectOutput out) throws
IOException {
          out.writeInt(size);
          out.writeObject(drawName);
          out.writeInt(playersLength);
for(int i = 0; i < playersLength; i++)
) out.writeObject(players);
          out.writeInt(seedsLength);
for(int i = 0; i < seedsLength; i++)
) out.writeObject(seeds[i]);
          out.writeInt(drawLength);
for(int i = 0; i < drawLength; i++)
) out.writeObject(draw[i]);
public void readExternal(ObjectInput in) throws
IOException, ClassNotFoundException {
          size = in.readInt();
          drawName = (String)in.readObject();
          playersLength = in.readInt();
for(int i = 0; i < playersLength; i++) players[i] =
= (String)in.readObject();
          seedsLength = in.readInt();
for(int i = 0; i < seedsLength; i++) seeds[i] =
= (String)in.readObject();
          drawLength = in.readInt();
for(int i = 0; i < drawLength; i++) draw[i] =
= (String)in.readObject();
You can now use your class as you would a Serializable
class, but it will only save the data
Hope this helped
webaf409java
I forgot to add some critical information in my original post. My apologies. :(
I've thought about using Externalizable, but am hesitant to use it because the application would no longer be able to read in files using the old save format (ie, AbstractTableModels for JTables without CellEditorRemovers ). I want to preserve the ability to read the old saved AbstractTableModel formats if possible.
Do you know of a way to revert to the default deserialization mechanism from readExternal? This way, during deserialization, I could do a quick test on the object being read and have the ability to default to the regular deserialization mechanism if the object is of the old type or continue with the new Externalizable stuff if the object is one of the new type. Maintaining file compatibility is key.

Jtable with MultiRowHeader and multiCell

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