Unknown Object in the eyes of the JTable

Hey! :)
Alright, here's my question/situation. I have an object that I made which consists of student data (student number, name, country, etc...) and I want to insert this data into a JTable. The thing is that because it's my own object, the JTable doesn't recognize this data. I was thinking to convert the data to Object datatype, but when I tried doing that, it didn't work. I tried typecasting and that didn't work either. What should I do?

JTable will call toString() on any object that you put into it, which probably isn't what you want.
What you need is your own JTableModel class. It's pretty easy to do. Try googling for that.

Similar Messages

I have the ipod symbol come up with the x's in the eyes, what the ****?

so i have a 1st generation 20GB ipod the big ole white one. i got it from my mom it has been cared for very well but it is old. i went to turn it on one day and i got this goofy lookin symbol that come up on the screen after the apple start up icon. it won't play any music or nothin. I was hopin someone could help me out or at least maybe they know what the deal is...

Some of the things that can result in this symbol are dead hard drive or loose cable connecting hard drive to the iPod's motherboard. Though, usually if you have dead hard drive, you'll get error telling you to restore iPod in iTunes (and restore failing with some strange numeric code). There could be other types of problems that can result in this symbol showing up. You could try restoring iPod from iTunes, or putting it into disk mode and checking if you can see or reformat the hard drive with Disk Utility (if you have Mac). See if you get any errors, and go from there.

Which case is the best for the iPhone 6?

So I am just wondering which case would be the best for the iPhone 6. I know that there are plenty of different cases out there. And I would like to get one that doesn't limit the use of the phone. But I also need the case that's good with drops and what not. Not that I make a habit of dropping my phone.

Of course, "best" case is in the eyes of the person using the phone.
Some would say it is an Otterbox, others would say it is a case which does not add too much bulk, others would say it is a case which extends battery life of your device, my daughter says the best case is the one she thinks is the most attractive(and minimizes bulk) and jorgeo_vzw has given his opinion which differs from at least a few of these options.
My best suggestion would be to determine what your usage habits are and choose according to those habits. The best case will not be the same case for everyone.

Problems resetting the model for a JTable

Hello,
My scenario sounds like this: from one separate thread I'm listening for users that log into the network. Those users have to be displayed in an interface that I chose to be a JTable.
When a user/users are found the view is notified. It seems simple in principle.
However, I receive from time to time some execeptions from the Event Dispatch Thread. The errors seem very very simple and intuitive but coming from a different thread I can't tell why they come. Another big problem is that those errors are indeterminate. I can't tell when or if they arise at all. Below is the code with the problems along with the exceptions.
// reconstructing the model here from the peers ArrayList
String[] columnNames = theTable.getColumnNames();
Object[][] data = new Object[peers.size()][columnNames.length];
for (int i = 0; i < peers.size(); i++) {
     for (int j = 0; j < Constants.userColumns; j++) {
               if (j == 0)
                    data[i][j] = peers.get(i);
               else
                    data[i][j] = "";
// resetting the model for my component; when I comment this part everything works ok
theTable.setModel(new DefaultTableModel(data, columnNames) {
     private static final long serialVersionUID = 1L;
     public boolean isCellEditable(int row, int column) {
                 return false;
Exception in thread "AWT-EventQueue-0" java.util.NoSuchElementException: Vector Enumeration
     at java.util.Vector$1.nextElement(Unknown Source)
     at javax.swing.plaf.basic.BasicTableUI.getPreferredSize(Unknown Source)
     at javax.swing.JComponent.getPreferredSize(Unknown Source)
     at javax.swing.JTable.getScrollableTracksViewportHeight(Unknown Source)
     at javax.swing.ScrollPaneLayout.layoutContainer(Unknown Source)
     at java.awt.Container.layout(Unknown Source)
     at java.awt.Container.doLayout(Unknown Source)
     at java.awt.Container.validateTree(Unknown Source)
     at java.awt.Container.validate(Unknown Source)
     at javax.swing.RepaintManager.validateInvalidComponents(Unknown Source)
     at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)or sometimes I get:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0 >= 0
     at java.util.Vector.elementAt(Unknown Source)
     at javax.swing.table.DefaultTableColumnModel.getColumn(Unknown Source)
     at javax.swing.JTable.convertColumnIndexToModel(Unknown Source)
     at javax.swing.JTable.isCellEditable(Unknown Source)
     at javax.swing.table.DefaultTableCellRenderer.getTableCellRendererComponent(Unknown Source)
     at javax.swing.JTable.prepareRenderer(Unknown Source)
     at javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)
     at javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
     at javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
     at javax.swing.plaf.ComponentUI.update(Unknown Source)
     at javax.swing.JComponent.paintComponent(Unknown Source)
     at javax.swing.JComponent.paint(Unknown Source)
     at javax.swing.JComponent.paintToOffscreen(Unknown Source)
     at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
     at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
     at javax.swing.RepaintManager.paint(Unknown Source)
     at javax.swing.JComponent._paintImmediately(Unknown Source)
     at javax.swing.JComponent.paintImmediately(Unknown Source)
     at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
     at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
     at javax.swing.RepaintManager.seqPaintDirtyRegions(Unknown Source)
     at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source) It seems that the resetting part is the one that causes the errors to arise because when I comment it out everything works smooth so I'm guessing it might have to do with the layout manager(I tried to use several even without any LM and still nothing).
Meanwhile I switched to JList and things are ok. Still I'm very curios why this is happening and how I could fix it.
Any idea will be highly appreciated!
Thank you,
Ariel

After wrapping setModel with SwingUtilities.invokeLater() (as Darryl sugested), it seems to work fine.
I haven't received those random errors up to now (it's been two days). Hope they won't appear anymore.
Thanks, Darryl.

JTable - Can I change the color of the text on a row by row basis?

Hi All,
I'm redoing a bit of old uni coursework (to model a stockmarket, stock ticker server & stock ticker application) to brush up my Java skills (esp Swing and Event Handling) and am programming the UI by hand using Swing (its the only way to learn something....(I've certianly nailed Layout Management!!))
In the stocktickerserver GUI I'm using a JTable to display the details about stocks.
The user can select a stock and view the details of the stock in another frame. In one panel in the JFrame I've got a JTable listing the history items for the stock (Price, Change, Date).
Is it possible to color the rows of the JTable according to the value of the change column (or at least the value I insert there)?
e.g
if (change > 0){
Blue;
else{
if (change < 0){
Red;
else{
Green;
I'm completly ignorant on how to achieve this (or even if its possible at all) so all your ideas welcome.
Any help much appreciated
Pete
P.S.
The Stock History is a class that I store in a [private] Vector in the Stock Class.
For the selected Stock I loop through this vector getting the items (using various accessor methods)
I extract the values from the return StockHistory object and build a DefaultTableModel from these
Then I call JTable.setModel(theModel) to build the table

implement TableCellRenderer and change foreground of the Renderer in the method getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) . Install this renderer to your table.

Not Updating the Values in the JComboBox and JTable

Hi Friends
In my program i hava Two JComboBox and One JTable. I Update the ComboBox with different field on A Table. and then Display a list of record in the JTable.
It is Displaying the Values in the Begining But when i try to Select the Next Item in the ComboBox it is not Updating the Records Eeither to JComboBox or JTable.
MY CODE is this
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.DefaultComboBoxModel.*;
import javax.swing.table.*;
import java.sql.*;
import java.util.*;
public class SearchBook extends JDialog implements ActionListener
     private JComboBox comboCategory,comboAuthor;
     private JSplitPane splitpane;
     private JTable table;
     private JToolBar toolBar;
     private JButton btnclose, btncancel;
     private JPanel panel1,panel2,panel3,panel4;
     private JLabel lblCategory,lblAuthor;
     private Container c;
     //DefaultTableModel model;
     Statement st;
     ResultSet rs;
     Vector v = new Vector();
     public SearchBook (Connection con)
          // Property for JDialog
          setTitle("Search Books");
          setLocation(40,110);
          setModal(true);
          setSize(750,450);
          // Creating ToolBar Button
          btnclose = new JButton(new ImageIcon("Images/export.gif"));
          btnclose.addActionListener(this);
          // Creating Tool Bar
          toolBar = new JToolBar();
          toolBar.add(btnclose);
          try
               st=con.createStatement();
               rs =st.executeQuery("SELECT BCat from Books Group By Books.BCat");
               while(rs.next())
                    v.add(rs.getString(1));
          catch(SQLException ex)
               System.out.println("Error");
          panel1= new JPanel();
          panel1.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          c.fill = GridBagConstraints.HORIZONTAL;
          lblCategory = new JLabel("Category:");
          lblCategory.setHorizontalAlignment (JTextField.CENTER);
          c.gridx=2;
          c.gridy=2;
          panel1.add(lblCategory,c);
          comboCategory = new JComboBox(v);
          comboCategory.addActionListener(this);
          c.ipadx=20;
          c.gridx=3;
          c.gridwidth=1;
          c.gridy=2;
          panel1.add(comboCategory,c);
          lblAuthor = new JLabel("Author/Publisher:");
          c.gridwidth=2;
          c.gridx=1;
          c.gridy=4;
          panel1.add(lblAuthor,c);
          lblAuthor.setHorizontalAlignment (JTextField.LEFT);
          comboAuthor = new JComboBox();
          comboAuthor.addActionListener(this);
          c.insets= new Insets(20,0,0,0);
          c.ipadx=20;
          c.gridx=3;
          c.gridy=4;
          panel1.add(comboAuthor,c);
          comboAuthor.setBounds (125, 165, 175, 25);
          table = new JTable();
          JScrollPane scrollpane = new JScrollPane(table);
          //panel2 = new JPanel();
          //panel2.add(scrollpane);
          splitpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,panel1,scrollpane);
          splitpane.setDividerSize(15);
          splitpane.setDividerLocation(190);
          getContentPane().add(toolBar,BorderLayout.NORTH);
          getContentPane().add(splitpane);
     public void actionPerformed(ActionEvent ae)
          Object obj= ae.getSource();
          if(obj==comboCategory)
               String selecteditem = (String)comboCategory.getSelectedItem();
               displayAuthor(selecteditem);
               System.out.println("Selected Item"+selecteditem);
          else if(obj==btnclose)
               setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
          else if(obj==comboAuthor)
               String selecteditem1 = (String)comboAuthor.getSelectedItem();
               displayavailablity(selecteditem1);
               //System.out.println("Selected Item"+selecteditem1);
               System.out.println("Selected Author"+selecteditem1);
     private void displayAuthor(String selecteditem)
          try
          {     Vector data = new Vector();
               rs= st.executeQuery("SELECT BAuthorandPublisher FROM Books where BCat='" + selecteditem + "' Group By Books.BAuthorandPublisher");
               System.out.println("Executing");
               while(rs.next())
                    data.add(rs.getString(1));
               //((DefaultComboBoxModel)comboAuthor.getModel()).setVectorData(data);
               comboAuthor.setModel(new DefaultComboBoxModel(data));
          catch(SQLException ex)
               System.out.println("ERROR");
     private void displayavailablity(String selecteditem1)
               try
                    Vector columnNames = new Vector();
                    Vector data1 = new Vector();
                    rs= st.executeQuery("SELECT * FROM Books where BAuthorandPublisher='" + selecteditem1 +"'");
                    ResultSetMetaData md= rs.getMetaData();
                    int columns =md.getColumnCount();
                    String booktblheading[]={"Book ID","Book NAME","BOOK AUTHOR/PUBLISHER","REFRENCE","CATEGORY"};
                    for(int i=1; i<= booktblheading.length;i++)
                         columnNames.addElement(booktblheading[i-1]);
                    while(rs.next())
                         Vector row = new Vector(columns);
                         for(int i=1;i<=columns;i++)
                              row.addElement(rs.getObject(i));
                         data1.addElement(row);
                         //System.out.println("data is:"+data);
                    ((DefaultTableModel)table.getModel()).setDataVector(data1,columnNames);
                    //DefaultTableModel model = new DefaultTableModel(data1,columnNames);
                    //table.setModel(model);
                    rs.close();
                    st.close();
               catch(SQLException ex)
}Please check my code and give me some Better Solution
Thank you

You already have a posting on this topic:
http://forum.java.sun.com/thread.jspa?threadID=5143235

Shading part of a JTable Cell dependent upon the value of the cell

Hi
Was hoping some one woudl be able to provide some help with this. I'm trying to create a renderer that will "shade" part of a JTable cell's background depending upon the value in the cell as a percentage (E.g. if the cell contains 0.25 then a quarter of the cell background will be shaded)
What I've got so far is a renderer which will draw a rectangle whose width is the relevant percentage of the cell's width. (i.e. the width of the column) based on something similar I found in the forum but the part I'm struggling with is getting it to draw this rectangle in any cell other than the first cell. I've tried using .getCellRect(...) to get the x and y position of the cell to draw the rectangle but I still can't make it work.
The code for my renderer as it stands is:
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
public class PercentageRepresentationRenderer extends JLabel implements TableCellRenderer{
     double percentageValue;
     double rectWidth;
     double rectHeight;
     JTable table;
     int row;
     int column;
     int x;
     int y;
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
          if (value instanceof Number)
               this.table = table;
               this.row = row;
               this.column = column;
               Number numValue = (Number)value;
               percentageValue = numValue.doubleValue();
               rectHeight = table.getRowHeight(row);
               rectWidth = percentageValue * table.getColumnModel().getColumn(column).getWidth();
          return this;
     public void paintComponent(Graphics g) {
        x = table.getCellRect(row, column, false).x;
        y = table.getCellRect(row, column, false).y;
          setOpaque(false);
        Graphics2D g2d = (Graphics2D)g;
        g2d.fillRect(x,y, new Double(rectWidth).intValue(), new Double(rectHeight).intValue());
        super.paintComponent(g);
}and the following code produces a runnable example:
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class PercentageTestTable extends JFrame {
     public PercentageTestTable()
          Object[] columnNames = new Object[]{"A","B"};
          Object[][] tableData = new Object[][]{{0.25,0.5},{0.75,1.0}};
          DefaultTableModel testModel = new DefaultTableModel(tableData,columnNames);
          JTable test = new JTable(testModel);
          test.setDefaultRenderer(Object.class, new PercentageRepresentationRenderer());
          JScrollPane scroll = new JScrollPane();
          scroll.getViewport().add(test);
          add(scroll);
     public static void main(String[] args)
          PercentageTestTable testTable = new PercentageTestTable();
          testTable.pack();
          testTable.setVisible(true);
          testTable.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}If anyone could help or point me in the right direction, I'd appreciate it.
Ruanae

This is an example I published some while ago -
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class Fred120 extends JPanel
    static final Object[][] tableData =
        {1, new Double(10.0)},
        {2, new Double(20.0)},
        {3, new Double(50.0)},
        {4, new Double(10.0)},
        {5, new Double(95.0)},
        {6, new Double(60.0)},
    static final Object[] headers =
        "One",
        "Two",
    public Fred120() throws Exception
        super(new BorderLayout());
        final DefaultTableModel model = new DefaultTableModel(tableData, headers);
        final JTable table = new JTable(model);
        table.getColumnModel().getColumn(1).setCellRenderer( new LocalCellRenderer(120.0));
        add(table);
        add(table.getTableHeader(), BorderLayout.NORTH);
    public class LocalCellRenderer extends DefaultTableCellRenderer
        private double v = 0.0;
        private double maxV;
        private final JPanel renderer = new JPanel(new GridLayout(1,0))
            public void paintComponent(Graphics g)
                super.paintComponent(g);
                g.setColor(Color.CYAN);
                int w = (int)(getWidth() * v / maxV + 0.5);
                int h = getHeight();
                g.fillRect(0, 0, w, h);
                g.drawRect(0, 0, w, h);
        private LocalCellRenderer(double maxV)
            this.maxV = maxV;
            renderer.add(this);
            renderer.setOpaque(true);
            renderer.setBackground(Color.YELLOW);
            renderer.setBorder(null);
            setOpaque(false);
            setHorizontalAlignment(JLabel.CENTER);
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col)
            final JLabel label = (JLabel) super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
            if (value instanceof Double)
                v = ((Double)value).doubleValue();
            return renderer;
    public static void main(String[] args) throws Exception
        final JFrame frame = new JFrame("Fred120");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new Fred120());
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
}

Swing: when trying to get the values from a JTable inside an event handler

Hi,
I am trying to write a graphical interface to compute the Gauss Elimination procedure for solving linear systems. The class for computing the output of a linear system already works fine on console mode, but I am fighting a little bit to make it work with Swing.
I put two buttons (plus labels) and a JTextField . The buttons have the following role:
One of them gets the value from the JTextField and it will be used to the system dimension. The other should compute the solution. I also added a JTable so that the user can type the values in the screen.
So whenever the user hits the button Dimensiona the program should retrieve the values from the table cells and pass them to a 2D Array. However, the program throws a NullPointerException when I try to
do it. I have put the code for copying this Matrix inside a method and I call it from the inner class event handler.
I would thank you very much for the help.
Daniel V. Gomes
here goes the code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import AdvanceMath.*;
public class MathF2 extends JFrame {
private JTextField ArrayOfFields[];
private JTextField DimOfSis;
private JButton Calcular;
private JButton Ativar;
private JLabel label1;
private JLabel label2;
private Container container;
private int value;
private JTable DataTable;
private double[][] A;
private double[] B;
private boolean dimensionado = false;
private boolean podecalc = false;
public MathF2 (){
super("Math Calcs");
Container container = getContentPane();
container.setLayout( new FlowLayout(FlowLayout.CENTER) );
Calcular = new JButton("Resolver");
Calcular.setEnabled(false);
Ativar = new JButton("Dimensionar");
label1 = new JLabel("Clique no bot�o para resolver o sistema.");
label2 = new JLabel("Qual a ordem do sistema?");
DimOfSis = new JTextField(4);
DimOfSis.setText("0");
JTable DataTable = new JTable(10,10);
container.add(label2);
container.add(DimOfSis);
container.add(Ativar);
container.add(label1);
container.add(Calcular);
container.add(DataTable);
for ( int i = 0; i < 10 ; i ++ ){
for ( int j = 0 ; j < 10 ; j++) {
DataTable.setValueAt("0",i,j);
myHandler handler = new myHandler();
Calcular.addActionListener(handler);
Ativar.addActionListener(handler);
setSize( 500 , 500 );
setVisible( true );
public static void main ( String args[] ){
MathF2 application = new MathF2();
application.addWindowListener(
new WindowAdapter(){
public void windowClosing (WindowEvent event)
System.exit( 0 );
private class myHandler implements ActionListener {
public void actionPerformed ( ActionEvent event ){
if ( event.getSource()== Calcular ) {
if ( event.getSource()== Ativar ) {
//dimensiona a Matriz A
if (dimensionado == false) {
if (DimOfSis.getText()=="0") {
value = 2;
} else {
value = Integer.parseInt(DimOfSis.getText());
dimensionado = true;
Ativar.setEnabled(false);
System.out.println(value);
} else {
Ativar.setEnabled(false);
Calcular.setEnabled(true);
podecalc = true;
try {
InitValores( DataTable, value );
} catch (Exception e) {
System.out.println("Erro ao criar matriz" + e );
private class myHandler2 implements ItemListener {
public void itemStateChanged( ItemEvent event ){
private void InitValores( JTable table, int n ) {
A = new double[n][n];
B = new double[n];
javax.swing.table.TableModel model = table.getModel();
for ( int i = 0 ; i < n ; i++ ){
for (int j = 0 ; j < n ; j++ ){
Object temp1 = model.getValueAt(i,j);
String temp2 = String.valueOf(temp1);
A[i][j] = Double.parseDouble(temp2);

What I did is set up a :
// This code will setup a listener for the table to handle a selection
players.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
ListSelectionModel rowSM = players.getSelectionModel();
rowSM.addListSelectionListener(new Delete_Player_row_Selection(this));
//Class will take the event and call a method inside the Delete_Player object.
class Delete_Player_row_Selection
implements javax.swing.event.ListSelectionListener
Delete_Player adaptee;
Delete_Player_row_Selection (Delete_Player temp)
adaptee = temp;
public void valueChanged (ListSelectionEvent listSelectionEvent)
adaptee.row_Selection(listSelectionEvent);
in the row_Selection function
if(ex.getValueIsAdjusting()) //To remove double selection
return;
ListSelectionModel lsm = (ListSelectionModel) ex.getSource();
if(lsm.isSelectionEmpty())
System.out.println("EMtpy");
else
int selected_row = lsm.getMinSelectionIndex();
ResultSetTableModel model = (ResultSetTableModel) players.getModel();
String name = (String) model.getValueAt(selected_row, 1);
Integer id = (Integer) model.getValueAt(selected_row, 3);
This is how I got info out of a table when the user selected it

How can I get string that is the same as the name show on the Jtable UI

I need to implement the jtable keystore searching feature.
but I face one problem. because in my application, there are many different objects for the data vector in the model of different tables.
in order to using the same class to do the search for all of the tables. I need to get the same string for the items showing in the table instead using
table.getValueAt(r, c) to get a object. threrefore I can compare two strings.
any advice is appreciated.
Jack Tie

but the problem is Can we make sure the string we get
from table.getValueAt(r,c).toString
is the same as the string show on the JTable UI.That probably depends on the TableCellRenderer that is asked to render that particular column. I would assume that the default behavior is what you want, i.e. that the renderer uses toString() on the Object.

Add JTable Row Headers At The End Of The Rows(At Right)?

hi all
i got this example for adding JTable Row Headers,but it adds the headers at the left(beginning of the row)
and i want to add the headers at the end of the row(at right),any ideas how to do that?
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.AbstractListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
* @version 1.0 11/09/98
class RowHeaderRenderer extends JLabel implements ListCellRenderer {
RowHeaderRenderer(JTable table) {
    JTableHeader header = table.getTableHeader();
    setOpaque(true);
    setBorder(UIManager.getBorder("TableHeader.cellBorder"));
    setHorizontalAlignment(CENTER);
    setForeground(header.getForeground());
    setBackground(header.getBackground());
    setFont(header.getFont());
public Component getListCellRendererComponent(JList list, Object value,
      int index, boolean isSelected, boolean cellHasFocus) {
    setText((value == null) ? "" : value.toString());
    return this;
class RowHeaderExample extends JFrame {
public RowHeaderExample() {
    super("Row Header Example");
    setSize(370, 150);
    ListModel lm = new AbstractListModel() {
      String headers[] = { "Row1", "Row2", "Row3", "Row4"};
      public int getSize() {
        return headers.length;
      public Object getElementAt(int index) {
        return headers[index];
    DefaultTableModel dm = new DefaultTableModel(lm.getSize(), 4);
    JTable table = new JTable(dm);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    table.setRowHeight(18);
    JList rowHeader = new JList(lm);
    rowHeader.setFixedCellWidth(50);
    rowHeader.setFixedCellHeight(18);
    rowHeader.setCellRenderer(new RowHeaderRenderer(table));
    JScrollPane scroll = new JScrollPane(table);
    scroll.setRowHeaderView(rowHeader);
    getContentPane().add(scroll, BorderLayout.CENTER);
public static void main(String[] args) {
    RowHeaderExample frame = new RowHeaderExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
    frame.setVisible(true);
}

fixed by:
list.setBackground(table.getTableHeader().getBackground());here's the full code:
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
* @version 1.0 11/09/98
class RowHeaderRenderer extends JLabel implements ListCellRenderer {
JTable table;
RowHeaderRenderer(JTable table) {
    this.table = table;
    JTableHeader header = table.getTableHeader();
    setOpaque(true);
    setBorder(UIManager.getBorder("TableHeader.cellBorder"));
    setHorizontalAlignment(CENTER);
    setForeground(header.getForeground());
    setBackground(header.getBackground());
    setFont(header.getFont());
public Component getListCellRendererComponent(JList list, Object value,
      int index, boolean isSelected, boolean cellHasFocus) {
    list.setBackground(table.getTableHeader().getBackground());
    setText((value == null) ? "" : value.toString());
    return this;
class RowHeaderExample extends JFrame {
public RowHeaderExample() {
    super("Row Header Example");
    setSize(370, 150);
    setLocationRelativeTo(null);
    DefaultListModel lstModel = new DefaultListModel();
    lstModel.addElement("Row 1");
    lstModel.addElement("Row 2");
    lstModel.addElement("Row 3");
    lstModel.addElement("Row 4");
    DefaultTableModel dm = new DefaultTableModel(lstModel.getSize(), 4);
    JTable table = new JTable(dm);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    table.setRowHeight(18);
    JList rowHeader = new JList(lstModel);
    rowHeader.setFixedCellWidth(50);
    rowHeader.setFixedCellHeight(18);
    rowHeader.setCellRenderer(new RowHeaderRenderer(table));
    JScrollPane scroll = new JScrollPane(table);
    scroll.setRowHeaderView(rowHeader);
    table.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
    scroll.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
    getContentPane().add(scroll, BorderLayout.CENTER);
public static void main(String[] args) {
    RowHeaderExample frame = new RowHeaderExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
    frame.setVisible(true);
}

The pool managing the instance is not available or the location monitoring object cannot be found

SCOM Environment
Windows 2012
SQL 2012
Everything patched and to latest build
I've installed SCOM using the MS SCOM guidelines. When I attempt to discovery, I get the error in the topic.
Here is the details of the error.
Note: The following information was gathered when the operation was attempted. The information may appear cryptic but provides context for the error. The application will continue to run.
Microsoft.EnterpriseManagement.Common.LocationObjectNotFoundException: The pool managing the instance is not available or the location monitoring object cannot be found.
at Microsoft.EnterpriseManagement.Common.Internal.ServiceProxy.HandleFault(String methodName, Message message)
at Microsoft.EnterpriseManagement.Common.Internal.AdministrationServiceProxy.LaunchDiscovery(Guid batchId, IList`1 jobDefinitions)
at Microsoft.EnterpriseManagement.Administration.ManagementServer.BeginExecuteWindowsDiscovery(IList`1 discoveryConfigurations, AsyncCallback callback, Object state)
at Microsoft.EnterpriseManagement.Mom.Internal.UI.Administration.DiscoveryProgress.<>c__DisplayClass7.<SubmitTask>b__3(Object , ConsoleJobEventArgs )
at
Thank you in advance for your help

Installed it manually, but it's not showing up as pending.
I also set it to accept manual installs.
Logs
02/10/2014 10:52:20,spid60,Unknown,Failed to verify Authenticode signature on DLL 'E:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Binn\msxmlsql.dll'.
02/10/2014 00:00:19,spid10s,Unknown,This instance of SQL Server has been using a process ID of 2952 since 2/7/2014 4:15:57 PM (local) 2/7/2014 9:15:57 PM (UTC). This is an informational message only; no user action is required.
02/09/2014 00:00:12,spid15s,Unknown,This instance of SQL Server has been using a process ID of 2952 since 2/7/2014 4:15:57 PM (local) 2/7/2014 9:15:57 PM (UTC). This is an informational message only; no user action is required.
02/08/2014 00:00:59,spid15s,Unknown,This instance of SQL Server has been using a process ID of 2952 since 2/7/2014 4:15:57 PM (local) 2/7/2014 9:15:57 PM (UTC). This is an informational message only; no user action is required.
Should I uninstall and install SQL 2008?

Why am I getting the error message "Can't open the illustration. The illustration contains and incomplete or garbled object description."

I work in a graphic design firm and 4 separate people have received these messages on separate days using separate files on separate MAC computers. We are all using CS6.
"Can't open the illustration. Could not complete the requested operation."
"Can't open the illustration. The illustration contains an illegal operand. 1206.3.6006 % 1205.9736 1178.52 m % 1206.2236 1178.8374 I % 1206.3232 1178.% 1206.3.6006"
"Can't open the illustration. The illustration contains an illegal or misplaced operator. ∘ê 3 0 R 508054 0 R 508055 0 R]/Order 508056 0 R/RBGroups[]>>/OCGs[5 0 R 6 0 R 7 0 R 8 0 R 9 0 R 46702 0 R 46703 0 R 46704 0 R 467"
"Can't open the illustration. The illustration contains and incomplete or garbled object description."
After clicking ok the file will open; however, most of the illustration is missing. We are interested in repairing our files, but we are more interesting in figuring out why this is happening and fixing it. We are nervous to even open anything for fear this will happen again.
Please help!

brittanyesparks,
One thing often tried first is to create a new document and File>Place the corrupted one to see how much may be rescued that way (remember to tick Paste remembers Layers in the Layer palette flyout/dropdown first, and to untick it afterwards).
Here is a website where you can see whether it can rescue the file, and if it can, you may pay for a subscription to have it done,
http://www.recoverytoolbox.com/buy_illustrator.html
and another similar website,
http://markzware.com/adobe-software/fix-illustrator-file-unknown-error-occurred-pdf2dtp-fi le-recovery/
As far as I remember, the former is for Win and the latter for Mac.
Here are a few pages about struggling with it yourself:
http://daxxter.wordpress.com/2009/04/16/how-to-recover-a-corrupted-illustrator-ai-file/
http://helpx.adobe.com/illustrator/kb/troubleshoot-damaged-illustrator-files.html
http://kb2.adobe.com/cps/500/cpsid_50032.html
http://kb2.adobe.com/cps/500/cpsid_50031.html
http://helpx.adobe.com/illustrator/kb/enable-content-recovery-mode-illustrator.html

How to hightlight the new inserted data in the last low of JTable?

Could somebody help me?
i am doing the e-restaurant application system .
When press the food button, the JTable will list out the order details.
When the order is long, the scroll pane will show up.
My problem is[ b] how to hightlight the new inserted data in the last low of JTable when the food button is press every time?The scroll pane will automatically scroll down the to the new insertted data.
In the List, i get the effect like this command but in the JTable how?
list.ensureIndexIsVisible(orderDetails.getSize()-1);
thank in advance.
Below is the snapshot of my coding:
DefaultTableModel model=new DefaultTableModel(cells,columnNames);
OrderModel sorter=new OrderModel(model);
JTable table=new JTable(sorter);
JScrollPane scrollPane=new JScrollPane();
scrollPane.add(table);
Object[] object={foodName, "1",price};
model.addRow(object);
sorter.fireTableDataChanged();
sorter.fireTableStructureChanged();

The right place to ask this one is "Swing Forum.
http://forum.java.sun.com/forum.jspa?forumID=57

Set the color of a row depending the value of the column in JTable?

Hi All,
I have a JTable that add rows when the user clicks on the button. In this way there can be any no. of rows in my table. My table contains five columns. When a new row is added , it is added with new data each time. Also the data of the rows keep on changing time to time.
My problem is that when the data value for the third column comes out to be -ve then color of the row should be red and if its value is +ve then the color of the row should be green.
I have tried for this in the way but it is not working properly.
public Component prepareRenderer(TableCellRenderer renderer,int rowIndex, int vColIndex)
     Component c = super.prepareRenderer(renderer, rowIndex, vColIndex);
if(change<0 && rowIndex<table.getRowCount() )
          c.setForeground(Color.red);
          c.setFont(new Font("TimesRoman",Font.PLAIN,11));
else if(change>0&&rowIndex<table.getRowCount() )
c.setForeground(new Color(20,220,20));
     c.setFont(new Font("TimesRoman",Font.PLAIN,11));
return c;
where change is the value of the third column.
Any help is highly appreciated.
Thanx in advance.
Regards,
Har Krishan

Why do you have 3 postings on this topic all made within minutes of each other? (see [url http://forum.java.sun.com/thread.jspa?threadID=574547&tstart=0]here and [url http://forum.java.sun.com/thread.jspa?threadID=574543&tstart=0]here).
If you created a post by mistake then make a comment in the posting so people don't waste there time attempting to answer an old post.
where change is the value of the third column.How do you know "change" is the value of the third column? Did you use a System.out.println(...) to verify this.
A better approach is to use:
Object o = table.getModel().getValueAt(row, 2);
Then convert the Object to an int value and do your testing. This way you are guaranteed to be testing against the correct value.

DefaultListModel & JTable; how to sync the items in the DefaultListModel

I have a jtable with items in it
example
name date age
Peter 01-jan-43 62
Ron 03-nov-73 32
when double clicking the name( eg peter), a new window pops up contains all relevent info of the user.
I added a sorter and when sorting the table it comes in the correct-wanted order, however, when double clicking the item - the wrong window pops up.
I take it the DefaultListModel is not synchronized with the tables elements.
Q: how to correct the DefaultListModel once the table has been sorted so it will be in sync with the jtable.
thanks
peter

thank you camicker for replying.
I have been trying for the past 4 hours to dig in the code (as well as google) to find where to implement a sync with the DefaultListModel. Nothing.
any input?
package com.shared.model;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
import javax.swing.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.*;
public class TableSorter extends AbstractTableModel
    protected TableModel tableModel;
    public static final int DESCENDING = -1;
    public static final int NOT_SORTED = 0;
    public static final int ASCENDING = 1;
    private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
    public static final Comparator COMPARABLE_COMAPRATOR = new Comparator()
        public int compare(Object o1, Object o2)
            return ((Comparable) o1).compareTo(o2);
    public static final Comparator LEXICAL_COMPARATOR = new Comparator()
        public int compare(Object o1, Object o2)
            return o1.toString().compareTo(o2.toString());
    private Row[] viewToModel;
    private int[] modelToView;
    private JTableHeader tableHeader;
    private MouseListener mouseListener;
    private TableModelListener tableModelListener;
    private Map columnComparators = new HashMap();
    private List sortingColumns = new ArrayList();
    public TableSorter()
        this.mouseListener = new MouseHandler();
        this.tableModelListener = new TableModelHandler();
    public TableSorter(TableModel tableModel)
        this();
        setTableModel(tableModel);
    public TableSorter(TableModel tableModel, JTableHeader tableHeader)
        this();
        setTableHeader(tableHeader);
        setTableModel(tableModel);
    private void clearSortingState()
        viewToModel = null;
        modelToView = null;
    public TableModel getTableModel()
        return tableModel;
    public void setTableModel(TableModel tableModel)
        if (this.tableModel != null)
            this.tableModel.removeTableModelListener(tableModelListener);
        this.tableModel = tableModel;
        if (this.tableModel != null)
            this.tableModel.addTableModelListener(tableModelListener);
        clearSortingState();
        fireTableStructureChanged();
    public JTableHeader getTableHeader()
        return tableHeader;
    public void setTableHeader(JTableHeader tableHeader)
        if (this.tableHeader != null)
            this.tableHeader.removeMouseListener(mouseListener);
            TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
            if (defaultRenderer instanceof SortableHeaderRenderer)
                this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
        this.tableHeader = tableHeader;
        if (this.tableHeader != null)
            this.tableHeader.addMouseListener(mouseListener);
            this.tableHeader.setDefaultRenderer
                    new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer())
    public boolean isSorting()
        return sortingColumns.size() != 0;
    private Directive getDirective(int column)
        for (int i = 0; i < sortingColumns.size(); i++)
            Directive directive = (Directive)sortingColumns.get(i);
            if (directive.column == column)
                return directive;
        return EMPTY_DIRECTIVE;
    public int getSortingStatus(int column)
        return getDirective(column).direction;
    private void sortingStatusChanged()
        clearSortingState();
        fireTableDataChanged();
        if (tableHeader != null)
            tableHeader.repaint();
    public void setSortingStatus(int column, int status)
        Directive directive = getDirective(column);
        if (directive != EMPTY_DIRECTIVE)
            sortingColumns.remove(directive);
        if (status != NOT_SORTED)
            sortingColumns.add(new Directive(column, status));
        sortingStatusChanged();
    protected Icon getHeaderRendererIcon(int column, int size)
        Directive directive = getDirective(column);
        if (directive == EMPTY_DIRECTIVE)
            return null;
        return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
    private void cancelSorting()
        sortingColumns.clear();
        sortingStatusChanged();
    public void setColumnComparator(Class type, Comparator comparator)
        if (comparator == null)
            columnComparators.remove(type);
        else
            columnComparators.put(type, comparator);
    protected Comparator getComparator(int column)
        Class columnType = tableModel.getColumnClass(column);
        Comparator comparator = (Comparator) columnComparators.get(columnType);
        if (comparator != null)
            return comparator;
        if (Comparable.class.isAssignableFrom(columnType))
            return COMPARABLE_COMAPRATOR;
        return LEXICAL_COMPARATOR;
    private Row[] getViewToModel()
        if (viewToModel == null)
            int tableModelRowCount = tableModel.getRowCount();
            viewToModel = new Row[tableModelRowCount];
            for (int row = 0; row < tableModelRowCount; row++)
                viewToModel[row] = new Row(row);
            if (isSorting())
                Arrays.sort(viewToModel);
        return viewToModel;
    public int modelIndex(int viewIndex)
        return getViewToModel()[viewIndex].modelIndex;
    private int[] getModelToView()
        if (modelToView == null)
            int n = getViewToModel().length;
            modelToView = new int[n];
            for (int i = 0; i < n; i++)
                modelToView[modelIndex(i)] = i;
        return modelToView;
    // TableModel interface methods
    public int getRowCount()
        return (tableModel == null) ? 0 : tableModel.getRowCount();
    public int getColumnCount()
        return (tableModel == null) ? 0 : tableModel.getColumnCount();
    public String getColumnName(int column)
        return tableModel.getColumnName(column);
    public Class getColumnClass(int column)
        return tableModel.getColumnClass(column);
    public boolean isCellEditable(int row, int column)
        return tableModel.isCellEditable(modelIndex(row), column);
    public Object getValueAt(int row, int column)
        return tableModel.getValueAt(modelIndex(row), column);
    public void setValueAt(Object aValue, int row, int column)
        tableModel.setValueAt(aValue, modelIndex(row), column);
    // Helper classes
    private class Row implements Comparable
        private int modelIndex;
        public Row(int index)
            this.modelIndex = index;
        public int compareTo(Object o)
            int row1 = modelIndex;
            int row2 = ((Row) o).modelIndex;
            for (Iterator it = sortingColumns.iterator(); it.hasNext();)
                Directive directive = (Directive) it.next();
                int column = directive.column;
                Object o1 = tableModel.getValueAt(row1, column);
                Object o2 = tableModel.getValueAt(row2, column);
                int comparison = 0;
                // Define null less than everything, except null.
                if (o1 == null && o2 == null)
                    comparison = 0;
                } else if (o1 == null)
                    comparison = -1;
                } else if (o2 == null)
                    comparison = 1;
                } else {
                    comparison = getComparator(column).compare(o1, o2);
                if (comparison != 0)
                    return directive.direction == DESCENDING ? -comparison : comparison;
            return 0;
    private class TableModelHandler implements TableModelListener
        public void tableChanged(TableModelEvent e)
            // If we're not sorting by anything, just pass the event along.
            if (!isSorting())
                clearSortingState();
                fireTableChanged(e);
                return;
            // If the table structure has changed, cancel the sorting; the
            // sorting columns may have been either moved or deleted from
            // the model.
            if (e.getFirstRow() == TableModelEvent.HEADER_ROW)
                cancelSorting();
                fireTableChanged(e);
                return;
            // We can map a cell event through to the view without widening
            // when the following conditions apply:
            // a) all the changes are on one row (e.getFirstRow() == e.getLastRow()) and,
            // b) all the changes are in one column (column != TableModelEvent.ALL_COLUMNS) and,
            // c) we are not sorting on that column (getSortingStatus(column) == NOT_SORTED) and,
            // d) a reverse lookup will not trigger a sort (modelToView != null)
            // Note: INSERT and DELETE events fail this test as they have column == ALL_COLUMNS.
            // The last check, for (modelToView != null) is to see if modelToView
            // is already allocated. If we don't do this check; sorting can become
            // a performance bottleneck for applications where cells
            // change rapidly in different parts of the table. If cells
            // change alternately in the sorting column and then outside of
            // it this class can end up re-sorting on alternate cell updates -
            // which can be a performance problem for large tables. The last
            // clause avoids this problem.
            int column = e.getColumn();
            if (e.getFirstRow() == e.getLastRow()
                    && column != TableModelEvent.ALL_COLUMNS
                    && getSortingStatus(column) == NOT_SORTED
                    && modelToView != null)
                int viewIndex = getModelToView()[e.getFirstRow()];
                fireTableChanged(new TableModelEvent(TableSorter.this,
                                                     viewIndex, viewIndex,
                                                     column, e.getType()));
                return;
            // Something has happened to the data that may have invalidated the row order.
            clearSortingState();
            fireTableDataChanged();
            return;
    private class MouseHandler extends MouseAdapter
        public void mouseClicked(MouseEvent e)
            JTableHeader h = (JTableHeader) e.getSource();
            TableColumnModel columnModel = h.getColumnModel();
            int viewColumn = columnModel.getColumnIndexAtX(e.getX());
            int column = columnModel.getColumn(viewColumn).getModelIndex();
            if (column != -1)
                int status = getSortingStatus(column);
                if (!e.isControlDown())
                    cancelSorting();
                // Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or
                // {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed.
                status = status + (e.isShiftDown() ? -1 : 1);
                status = (status + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}
                setSortingStatus(column, status);
    private static class Arrow implements Icon
        private boolean descending;
        private int size;
        private int priority;
        public Arrow(boolean descending, int size, int priority)
            this.descending = descending;
            this.size = size;
            this.priority = priority;
        public void paintIcon(Component c, Graphics g, int x, int y)
            Color color = c == null ? Color.GRAY : c.getBackground();
            // In a compound sort, make each succesive triangle 20%
            // smaller than the previous one.
            int dx = (int)(size/2*Math.pow(0.8, priority));
            int dy = descending ? dx : -dx;
            // Align icon (roughly) with font baseline.
            y = y + 5*size/6 + (descending ? -dy : 0);
            int shift = descending ? 1 : -1;
            g.translate(x, y);
            // Right diagonal.
            g.setColor(color.darker());
            g.drawLine(dx / 2, dy, 0, 0);
            g.drawLine(dx / 2, dy + shift, 0, shift);
            // Left diagonal.
            g.setColor(color.brighter());
            g.drawLine(dx / 2, dy, dx, 0);
            g.drawLine(dx / 2, dy + shift, dx, shift);
            // Horizontal line.
            if (descending) {
                g.setColor(color.darker().darker());
            } else {
                g.setColor(color.brighter().brighter());
            g.drawLine(dx, 0, 0, 0);
            g.setColor(color);
            g.translate(-x, -y);
        public int getIconWidth()
            return size;
        public int getIconHeight()
            return size;
    private class SortableHeaderRenderer implements TableCellRenderer
        private TableCellRenderer tableCellRenderer;
        public SortableHeaderRenderer(TableCellRenderer tableCellRenderer)
            this.tableCellRenderer = tableCellRenderer;
        public Component getTableCellRendererComponent(JTable table,
                                                       Object value,
                                                       boolean isSelected,
                                                       boolean hasFocus,
                                                       int row,
                                                       int column)
            Component c = tableCellRenderer.getTableCellRendererComponent(table,
                    value, isSelected, hasFocus, row, column);
            if (c instanceof JLabel) {
                JLabel l = (JLabel) c;
                l.setHorizontalTextPosition(JLabel.LEFT);
                int modelColumn = table.convertColumnIndexToModel(column);
                l.setIcon(getHeaderRendererIcon(modelColumn, l.getFont().getSize()));
            return c;
    private static class Directive
        private int column;
        private int direction;
        public Directive(int column, int direction)
            this.column = column;
            this.direction = direction;
}

Unknown Object in the eyes of the JTable

Similar Messages

Maybe you are looking for