Horizontal scroll bar jumps

Question

Hi
When you execute the following code , you will see a table , drag or extend the column size of column D such that , you get a horizontal scroll pane
Now when you click on first,second or third column ( i.e row selection ) no problem
but if u select the fourth column i.e D , then the horizontal scroller jumps to right
any clue where this is done , i dont want this effect , is there a way to disable it ?
Regards
kmm
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.table.*;
import java.awt.Component.*;
public class Table
public static void main(String[] args)
JFrame frame = new JFrame("Table");
frame.addWindowListener( new WindowAdapter() {
public void windowClosing(WindowEvent e)
Window win = e.getWindow();
win.setVisible(false);
win.dispose();
System.exit(0);
JTable table = new JTable( 6,4 )
public TableCellRenderer getCellRenderer(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = tableColumn.getCellRenderer();
if (renderer == null) {
Class c = getColumnClass(column);
if( c.equals(Object.class) )
Object o = getValueAt(row,column);
if( o != null )
c = getValueAt(row,column).getClass();
renderer = getDefaultRenderer(c);
return renderer;
public TableCellEditor getCellEditor(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellEditor editor = tableColumn.getCellEditor();
if (editor == null) {
Class c = getColumnClass(column);
if( c.equals(Object.class) )
Object o = getValueAt(row,column);
if( o != null )
c = getValueAt(row,column).getClass();
editor = getDefaultEditor(c);
return editor;
// Buttons
table.setValueAt( new JButton("Button"), 0, 0 );
table.setValueAt( new JButton("Button"), 0, 1 );
// Combobox
JComboBox combo = new JComboBox( new String[] {"First", "Second", "Third"} );
table.setValueAt( combo, 1, 1 );
// Labels
table.setValueAt( new JLabel("Label"), 1, 0 );
JLabel label = new JLabel( "Label", new ImageIcon( table.getClass().getResource("new.gif") ),
JLabel.LEFT);
table.setValueAt( label, 1, 2 );
// Scrollbar
//table.setValueAt( new JScrollBar(JScrollBar.HORIZONTAL), 2,1 );
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
// RadioButtons
JRadioButton b1 = new JRadioButton( "Group1 Button1" );
JRadioButton b2 = new JRadioButton( "Group1 Button2" );
JRadioButton b3 = new JRadioButton( "Group1 Button3" );
ButtonGroup g1 = new ButtonGroup();
g1.add( b1 );
g1.add( b2 );
g1.add( b3 );
table.setValueAt( b1, 3, 0 );
table.setValueAt( b2, 3, 1 );
table.setValueAt( b3, 3, 2 );
//checkbox
JCheckBox c1 = new JCheckBox( "Check box1 " );
JCheckBox c2 = new JCheckBox( "Check box2" );
JCheckBox c3 = new JCheckBox( "Check box3" );
table.setValueAt( c1, 4, 0 );
table.setValueAt( c2, 4, 1 );
table.setValueAt( c3,4, 2 );
table.setDefaultRenderer( JComponent.class, new JComponentCellRenderer() );
//table.setDefaultEditor( JComponent.class, new JComponentCellEditor() );
JScrollPane sp = new JScrollPane(table);
frame.getContentPane().add( sp );
frame.pack();
frame.show();
class JComponentCellRenderer implements TableCellRenderer
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
return (JComponent)value;
}

Answer 1

It is done by JTable in changeSelection(..) to turn it off:
table.setAutoscrolls(false);