JTable with a multiple rows in a singel cell

[Suman Mummaneni]

Hi guys,

Is it possible to create a JTable with multiple rows in a single cell or is it possible to do a kind of text wraping in a the cell of a JTable. I need some sample code that does that.

-Suman

[Rachel Swailes]

You need to have a look at the tutorial from Sun on their website about JTables. In there you will find information about DefaultCellRenderer. What you are going to have to do it change the renderer to return a JTextArea component for that cell.

Have a look at the tutorial and then post some code and we'll help you out.

Cheers,
Rachel

[Suman Mummaneni]

Hi Rachel Swailes ,

I have read the tutorial from sun. He is my program but its not doing what its suppose to do.

  
package printpreview;
 
import javax.swing.*;
import javax.swing.table.*;
import java.awt.event.*;
import java.awt.*;
 
/**
 *
 * @author smummane
 */
public class TableTest extends JFrame{
    
    // The table has 10 rows and 3 columns
    private final JTable table = new JTable(10, 3);
    
    /** Creates a new instance of TableTest */
    public TableTest() {
 
      table.getColumnModel().getColumn(2).setCellRenderer(
        new TextAreaRenderer());
 
      table.setRowHeight(0, 50);
      table.setRowHeight(5, 100);
 
      getContentPane().add(new JScrollPane(table));
 
      String test = "The dog jumped over the lazy brown fox";
      table.getModel().setValueAt(test, 0, 0);
      table.getModel().setValueAt(test, 0, 1);
      table.getModel().setValueAt(test, 0, 2);
      table.getModel().setValueAt(test, 4, 0);
      table.getModel().setValueAt(test, 4, 1);
      table.getModel().setValueAt(test, 4, 2);
      table.doLayout();
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       TableTest test = new TableTest();
       test.setSize(600, 600);
       test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       test.setVisible(true);
    }
    
}
 
class TextAreaRenderer extends JTextArea
      implements TableCellRenderer {
 
    public TextAreaRenderer() {
      setLineWrap(true);
      setWrapStyleWord(true);
    }
 
    public Component getTableCellRendererComponent(JTable jTable,
        Object obj, boolean isSelected, boolean hasFocus, int row,
        int column) {
        setText((String)obj);
        int height_wanted = (int)getPreferredSize().getHeight();
        if (height_wanted != jTable.getRowHeight(row))
        jTable.setRowHeight(row, height_wanted);
        return this;
    }
  }

I do not understand why my code is not work proprely its displaying the table but the row height is not changing and the text area is also not being inserted into the cell. If you have got a better Idea than this plz reply

-Suman