How to add image in jtable header using 'Default table model'

Hi,
I created a table using "DefaultTableModel".
im able to add images in table cells but not in 'table header'.
i added inages in table by overriding "getColumnClass" of the DefaultTableModel.
But what to do for headers?
please help.
Thanks in advance.

The 'Java 5 tutorial' is really an outstanding oneI should note the the current tutorial on the Sun website has bee updated for Java 6. It contains updates to reflect the changes made in JDK6. Once of the changes is that sorting of tables is now supported directly which is why I needed to give you the link to the old tutorial.
http://java.sun.com/docs/books/tutorial/uiswing/TOC.html

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Kindly reply!

yes
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Hi all,
iam using Default Table model for my jtable i want to do pageup and pagedown operation .
TableColumnModel cm1 = new DefaultTableColumnModel();
DefaultTablemodel md = new DefaultTableModel(row,col);
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i have 500 rows currently in my database i want to display 100 in the first page and if i press the pagedown button the next 100 has to be diplayed wether this is possible here.. if possible please help mee.

Hi,
could you please avoid double posting:
http://forum.java.sun.com/thread.jsp?forum=57&thread=566380&tstart=0&trange=15
especially with different subjects.
It considerably reduces the overall efficiency as people will try to
help you while the answer could already have been given in the another thread.
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Hi,
Please check the below code which i used to add image to the header using iText . Similarly you can add image directly to the document also as a element.
Adding image as Header:
httpServletRequest = request.getServletRequest();
domainURL=httpServletRequest.getScheme()+"://"+httpServletRequest.getServerName();
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image.scalePercent(22);// As per you need
chunk = new Chunk(image, 0, -20);
HeaderFooter header_pdf = new HeaderFooter(new Phrase(chunk), false); // here i have added image as header
header_pdf.disableBorderSide(0);
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header_pdf.setBorder(0);
document.setHeader(header_pdf);
(or)
Adding Image a Element:
httpServletRequest = request.getServletRequest();
domainURL=httpServletRequest.getScheme()+"://"+httpServletRequest.getServerName();
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Java IText: Image | tutorials.jenkov.com
Regards,
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JTable Problem(Default Table Model)

Hi all,
iam using Default Table model for my jtable i want to do pageup and pagedown operation .
TableColumnModel cm1 = new DefaultTableColumnModel();
DefaultTablemodel md = new DefaultTableModel(row,col);
JTable t = new JTable(md,cm1);
i have 500 rows currently in my database i want to display 100 in the first page and if i press the pagedown button the next 100 has to be diplayed wether this is possible here.. if possible please help mee.

sample code :
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// A larger table model that performs "paging" of its data. This model reports a
// small number of rows (e.g., 100 or so) as a "page" of data. You can switch pages
// to view all of the rows as needed using the pageDown( ) and pageUp( ) methods.
// Presumably, access to the other pages of data is dictated by other GUI elements
// such as up/down buttons, or maybe a text field that allows you to enter the page
// number you want to display.
import javax.swing.table.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
class PagingModel extends AbstractTableModel {
protected int pageSize;
protected int pageOffset;
protected Record[] data;
public PagingModel( ) {
this(10000, 100);
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data = new Record[numRows];
pageSize = size;
// Fill our table with random data (from the Record( ) constructor).
for (int i=0; i < data.length; i++) {
data[i] = new Record( );
// Return values appropriate for the visible table part.
public int getRowCount( ) { return Math.min(pageSize, data.length); }
public int getColumnCount( ) { return Record.getColumnCount( ); }
// Work only on the visible part of the table.
public Object getValueAt(int row, int col) {
int realRow = row + (pageOffset * pageSize);
return data[realRow].getValueAt(col);
public String getColumnName(int col) {
return Record.getColumnName(col);
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public int getPageOffset( ) { return pageOffset; }
public int getPageCount( ) {
return (int)Math.ceil((double)data.length / pageSize);
// Use this method if you want to know how big the real table is. You could also
// write "getRealValueAt( )" if needed.
public int getRealRowCount( ) {
return data.length;
public int getPageSize( ) { return pageSize; }
public void setPageSize(int s) {
if (s == pageSize) { return; }
int oldPageSize = pageSize;
pageSize = s;
pageOffset=(oldPageSize * pageOffset) / pageSize;
fireTableDataChanged( );
// Update the page offset and fire a data changed event (all rows).
public void pageDown( ) {
if (pageOffset < getPageCount( ) - 1) {
pageOffset++;
fireTableDataChanged( );
// Update the page offset and fire a data changed (all rows).
public void pageUp( ) {
if (pageOffset > 0) {
pageOffset--;
fireTableDataChanged( );
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// the Page Up and Page Down buttons by default.
public static JScrollPane createPagingScrollPaneForTable(JTable jt) {
JScrollPane jsp = new JScrollPane(jt);
TableModel tmodel = jt.getModel( );
// Don't choke if this is called on a regular table . . .
if (! (tmodel instanceof PagingModel)) {
return jsp;
// Go ahead and build the real scrollpane.
final PagingModel model = (PagingModel)tmodel;
final JButton upButton = new JButton("Up");
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final JButton downButton = new JButton("Down");
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downButton.setEnabled(false); // One page...can't scroll down
upButton.addActionListener(new ActionListener( ) {
public void actionPerformed(ActionEvent ae) {
model.pageUp( );
// If we hit the top of the data, disable the Page Up button.
if (model.getPageOffset( ) == 0) {
upButton.setEnabled(false);
downButton.setEnabled(true);
downButton.addActionListener(new ActionListener( ) {
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model.pageDown( );
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if (model.getPageOffset( ) == (model.getPageCount( ) - 1)) {
downButton.setEnabled(false);
upButton.setEnabled(true);
// Turn on the scrollbars; otherwise, we won't get our corners.
jsp.setVerticalScrollBarPolicy
(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
jsp.setHorizontalScrollBarPolicy
(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
// Add in the corners (page up/down).
jsp.setCorner(ScrollPaneConstants.UPPER_RIGHT_CORNER, upButton);
jsp.setCorner(ScrollPaneConstants.LOWER_RIGHT_CORNER, downButton);
return jsp;
// Record.java
// A simple data structure for use with the PagingModel demo
class Record {
static String[] headers = { "Record Number", "Batch Number", "Reserved" };
static int counter;
String[] data;
public Record( ) {
data = new String[] { "" + (counter++), "" + System.currentTimeMillis( ),
"Reserved" };
public String getValueAt(int i) { return data[i]; }
public static String getColumnName(int i) { return headers[i]; }
public static int getColumnCount( ) { return headers.length; }
class PagingTester extends JFrame {
public PagingTester( ) {
super("Paged JTable Test");
setSize(300, 200);
setDefaultCloseOperation(EXIT_ON_CLOSE);
PagingModel pm = new PagingModel( );
JTable jt = new JTable(pm);
// Use our own custom scrollpane.
JScrollPane jsp = PagingModel.createPagingScrollPaneForTable(jt);
getContentPane( ).add(jsp, BorderLayout.CENTER);
public static void main(String args[]) {
PagingTester pt = new PagingTester( );
pt.setVisible(true);
}

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Hi ,
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The above code genrates a PDF for me however it genrates a file with file size zero bytes and does not open it following is my sample code
//**********Any Help would be appreciated
Thank You
public class My_Class
public String pdf_action()
EndPage ep=new EndPage();
return null;
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class EndPage extends PdfPageEventHelper
* Demonstrates the use of PageEvents.
* @param args no arguments needed
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try {
com.lowagie.text.Document document = new Document(PageSize.A4, 50, 50, 70, 70);
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writer.setPageEvent(new EndPage());
document.open();
String text = "Lots of text. ";
for (int k = 0; k < 10; ++k)
text += text;
document.add(new Paragraph(text));
document.close();
catch (Exception de) {
de.printStackTrace();
public void onEndPage(PdfWriter writer, Document document) {
try {
Rectangle page = document.getPageSize();
PdfPTable head = new PdfPTable(3);
for (int k = 1; k <= 6; ++k)
head.addCell("head " + k);
head.setTotalWidth(page.width() - document.leftMargin() - document.rightMargin());
head.writeSelectedRows(0, -1, document.leftMargin(), page.height() - document.topMargin() + head.getTotalHeight(),
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Hi,
Thanks for the quick response.
The problem is that when I keep the logo as a watermark, the pdf is not adjusting itself to include the logo as header.
But if I add a header text via Tools -> Headers and Footers, the pdf is adjusting itself so that the header text is at the beginning , not overlapping with the contents of pdf.
But while using logo as watermark, some times overlapping of the pdf contents and logo is happening.
Is there any way to add a logo in the Header and Footer via the option in Tools -> Headers and Footers
Thanks,
Vidhya

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Hi,
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I want to add image in column is it possible then how to add image in data base what data type we need to do

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jitendra

Hi again,
Several points that can help more:
1. If you are working with Dot.Net, then I highly recommend read the first link that you got! This is nice and simple coding. Another option is this link which is even better in my opinion:
http://www.dotnetgallery.com/kb/resource21-How-to-store-and-retrieve-images-from-SQL-server-database-using-aspnet.aspx
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To BLOB or Not To BLOB: Large Object Storage in a Database or a Filesystem
http://research.microsoft.com/apps/pubs/default.aspx?id=64525
FILESTREAM feature of SQL Server 2008
http://msdn.microsoft.com/library/hh461480
FileTables feature of SQL Server 2012
http://technet.microsoft.com/en-us/library/ff929144.aspx
Compare Options for Storing Blobs (SQL Server)
http://technet.microsoft.com/en-us/library/hh403405.aspx
Binary Large Object (Blob) Data (SQL Server)
http://technet.microsoft.com/en-us/library/bb895234.aspx
Managing BLOBs using SQL Server FileStream via EF and WCF streaming
* Very nice tutorial!
http://petermeinl.wordpress.com/2012/02/20/managing-blobs-using-sql-server-filestream-via-ef-and-wcf-streaming/
[Personal Site] [Blog] [Facebook]

How to set height of JTable Header ?

How to set height of JTable Header and set the text to another size ?

You can set the font of the header as you can for any component. The font will dictate the preferred height of the header. If you don't like the preferred height, you can set that as well.
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Author, Hardcore JFC (Cambridge Univ Press)
[email protected]

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How to add image in jtable header using 'Default table model'

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