JTable help Urgent need !!!!!

Question

hi, I am having problem in getting scrollBar arround my JTextArea that's in a cell of my JTable. If you run the following two files and see the output. The second cell should show me the scrollBars as the whole text is not visible. Please look at the code and see where I am doing wrong. I need to have scrollBars appear arround my individual JTextArea if the text doesn't fit in it. Any help is appreciated...
/****** This is the main file ***********/
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
public class MultiLineCellExample extends JFrame
public MultiLineCellExample()
super( "Multi-Line Cell Example" );
DefaultTableModel dm = new DefaultTableModel() {
public Class getColumnClass(int columnIndex) {
return String.class;
dm.setDataVector(new Object[][]{{"2"},{" Error 1Error 1Error 1Error 1Error 1Error 1 Error 1Error 1Error 1Error 1 Error 1Error 1Error 1 Error 1Error 1Error 1Error 1Error 1Error 1 Error 1Error 1Error 1Error 1Error 1Error 1Error 1"}},
new Object[]{"Following are the Errors"});
JTable table = new JTable( dm );
int lines = 2;
table.setRowHeight( table.getRowHeight() * lines);
table.setDefaultRenderer(String.class, new TextCellRenderer());
JScrollPane scroll = new JScrollPane( table );
getContentPane().add( scroll );
setSize( 400, 130 );
setVisible(true);
public static void main(String[] args)
MultiLineCellExample frame = new MultiLineCellExample();
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
/********* This is the TableCellRenderer file **********/
/* this code is from
Copyright (c) 1999 Computer Engineering and Communication Networks Lab (TIK)
Swiss Federal Institute of Technology (ETH) Zurich, Switzerland
All rights reserved.
Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
software and its documentation for any purpose, provided that the above
copyright notice and the following two paragraphs appear in all copies
of this software.
import javax.swing.*;
import javax.swing.table.TableCellRenderer;
import javax.swing.border.*;
import javax.swing.table.*;
import java.awt.Component;
import java.awt.Color;
import java.io.Serializable;
public class TextCellRenderer extends JTextArea
implements TableCellRenderer, Serializable{   //,Scrollable{  Need to implement this too to get scrolls on individual JtextAreas too.
                                                                                //currently not working, have to look into too.     
protected static Border noFocusBorder;
private Color unselectedForeground;
private Color unselectedBackground;
public TextCellRenderer() {
     super();
noFocusBorder = new EmptyBorder(1, 1, 2, 1);
          this.setOpaque(true);
this.setBorder(noFocusBorder);
this.setColumns(6);
this.setWrapStyleWord(true);
          this.setLineWrap(true);
          this.setAutoscrolls(true);
          //this is not working yet, trying to figure out some other way
     JScrollPane pane = new JScrollPane( this,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                                                  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
public void setForeground(Color c) {
super.setForeground(c);
unselectedForeground = c;
public void setBackground(Color c) {
super.setBackground(c);
unselectedBackground = c;
public void updateUI() {
super.updateUI();
          setForeground(null);
          setBackground(null);
JTable table;
// implements javax.swing.table.TableCellRenderer
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
this.table = table;
     if (isSelected) {
     super.setForeground(table.getSelectionForeground());
     super.setBackground(table.getSelectionBackground());
     else {
     super.setForeground((unselectedForeground != null) ? unselectedForeground
     : table.getForeground());
     super.setBackground((unselectedBackground != null) ? unselectedBackground
     : table.getBackground());
     setFont(table.getFont());
     if (hasFocus) {
     setBorder( UIManager.getBorder("Table.focusCellHighlightBorder") );
     if (table.isCellEditable(row, column)) {
     super.setForeground( UIManager.getColor("Table.focusCellForeground") );
     super.setBackground( UIManager.getColor("Table.focusCellBackground") );
     } else {
     setBorder(noFocusBorder);
setValue(value);
     return this;
protected void setValue(Object value) {
     setText((value == null) ? "" : value.toString());
if (table != null) {
String s = getText();
//count the number of returns
int ind = 0;
//add an extra line for the scroll bar if required
int num = 2;
do {
ind = s.indexOf("\n", ind);
if (ind >= 0) {
num++;
ind++;
} while (ind > 0);
//set the row height to fit in this cell
int newHeight = (table.getFont().getSize()*9*num)/5;
if (table.getRowHeight() < newHeight) {
table.setRowHeight(newHeight);
public static class UIResource extends DefaultTableCellRenderer
implements javax.swing.plaf.UIResource
public Dimension getPreferredScrollableViewportSize()
          return this.getPreferredSize();      
     public int getScrollableBlockIncrement(Rectangle r, int orietation, int direction)
          return 10;      
     public boolean getScrollableTracksViewportHeight()
          return false;      
     public boolean getScrollableTracksViewportWidth()
          return false;      
     public int getScrollableUnitIncrement(Rectangle r, int orientation, int direction)
          return 10;      

Answer 1

Hi,
You want to have a cell in the JTable with a JTextfield and a JScrollBar??? Can you specify and put the source code enclose in   JRG