Printing JTable

[satya sahu]

Hi All,
Can somebody tell me how to print the contents of a JTable. My requirement is i have a JTable with some data. The entire table along with its header, should be printed.
Please give me some sample code.
Thanks in advance.

[Lionel Badiou]

Hello Satya,

Here's a (q&d) sample. I think you may adjust it to your needs.

import javax.swing.*; 
import javax.swing.table.*; 
import java.awt.print.*; 
import java.util.*; 
import java.awt.*; 
import java.awt.event.*; 
import java.awt.geom.*; 
import java.awt.Dimension; 
import java.sql.*; 
 
public class PrintTable extends JPanel implements Printable { 
   JTable tableView; 
   public PrintTable() 
        { 
            this.setLayout(new BorderLayout()); 
            JLabel title = new JLabel("title"); 
            title.setBounds(295,5,300,20); 
            this.add(title); 
            try 
            { 
                MyTableModel myModel = /**** your model here ****/
                tableView = new JTable(myModel);  
                tableView.setPreferredScrollableViewportSize(new Dimension(780, 400));  
                JScrollPane scrollPane = new JScrollPane(tableView); 
                scrollPane.setPreferredSize(new Dimension(550, 80)); 
                this.add(BorderLayout.CENTER, scrollPane);  
            }      
            catch(Exception err)      
            {} 
            JButton printButton = new JButton(); 
            printButton.setText("Print it !"); 
            this.add(BorderLayout.SOUTH, printButton); 
            printButton.addActionListener( new ActionListener() 
            { 
                public void actionPerformed(ActionEvent evt) 
                { 
                    PrinterJob pj = PrinterJob.getPrinterJob();    
                    pj.setPrintable(PrintTable.this);    
                    pj.printDialog();    
                    try 
                    { 
                        pj.print();    
                    } 
                    catch (Exception PrintException) 
                    { 
                    }    
                } 
            } 
            ); 
        } 
 
   public int print(Graphics g, PageFormat pageFormat, int pageIndex)throws PrinterException 
        { 
            Graphics2D g2 = (Graphics2D)g; 
            g2.setColor(Color.black); 
            int fontHeight = g2.getFontMetrics().getHeight(); 
            int fontDescent = g2.getFontMetrics().getDescent(); 
    
            // reserve spaces for page number 
            double pageHeight = pageFormat.getImageableHeight() - fontHeight;    
            double pageWidth = pageFormat.getImageableWidth(); 
            double tableWidth = (double)tableView.getColumnModel().getTotalColumnWidth(); 
            double scale = 1; 
            if (tableWidth >= pageWidth) 
            {    
                scale = pageWidth / tableWidth; 
            } 
            double headerHeightOnPage = tableView.getTableHeader().getHeight()*scale; 
            double tableWidthOnPage = tableWidth * scale; 
            double oneRowHeight = (tableView.getRowHeight() + tableView.getRowMargin())*scale; 
            int numRowsOnAPage = (int)((pageHeight-headerHeightOnPage) / oneRowHeight); 
            double pageHeightForTable = oneRowHeight * numRowsOnAPage; 
            int totalNumPages = (int)Math.ceil(((double)tableView.getRowCount()) / numRowsOnAPage); 
            if (pageIndex >= totalNumPages)    
                return NO_SUCH_PAGE; 
            
            g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY()); 
           
            g2.drawString("Page: " + (pageIndex +1),(int)pageWidth/2 - 35, (int)(pageHeight + fontHeight - fontDescent)); 
            g2.translate(0f, headerHeightOnPage); 
            g2.translate(0f, -pageIndex*pageHeightForTable); 
                       if (pageIndex + 1 == totalNumPages) 
            {    
                int lastRowPrinted = numRowsOnAPage * pageIndex;    
                int numRowsLeft = tableView.getRowCount() - lastRowPrinted;    
                g2.setClip(0, (int)(pageHeightForTable * pageIndex),(int)Math.ceil(tableWidthOnPage),(int)Math.ceil(oneRowHeight * numRowsLeft)); 
            } 
                       else 
            { 
                g2.setClip(0, (int)(pageHeightForTable * pageIndex),(int)Math.ceil(tableWidthOnPage),(int)Math.ceil(pageHeightForTable)); 
            } 
            g2.scale(scale, scale); 
            tableView.paint(g2); 
                        g2.scale(1/scale, 1/scale); 
            g2.translate(0f, pageIndex*pageHeightForTable); 
            g2.translate(0f, -headerHeightOnPage); 
            g2.setClip(0, 0,(int)Math.ceil(tableWidthOnPage),(int)Math.ceil(headerHeightOnPage)); 
            g2.scale(scale, scale); 
            tableView.getTableHeader().paint(g2); 
            return Printable.PAGE_EXISTS; 
        } 
}

You may found useful to look at some reporting tools too (like JasperReports).

Hope that helps,

[sasi kala]

hi Lionel Badiou,

i am also having the same problem. my requirement is to print a html
page which is placed in JEditorPane. By using ur example program i am able
to print my html page.

thank you very much.

but i am unable to specify the number of pages to print.

i have one question regarding this How to count the number of lines in
JEditorPane? so that i can specify the number of pages to be printed.

Thanks in Advance.

[ April 21, 2005: Message edited by: sasi kala ]