Scrollable Cells in JTable

Question

I have a Jtable in which I have to show some big data. I cann't increase the size of the Cells So I need to add a scrollbar in each cell of the table through which I can scroll the text of cells.

I have tried to add a Custom Cell Renderer

private class ExtendedTableCellEditor extends AbstractCellEditor implements TableCellEditor
{
    JLabel area = new JLabel();
    String text;

    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int rowIndex, int vColIndex)
    { 
        area.setText(text);
        return new JScrollPane(area);
        }
            public Object getCellEditorValue()
        {
        return text;
    }
}

Now I am able to see the Scroll bar on the cells but not able to click and scroll them.

Any suggestions to this issue will be great. Thanks in Advance.

You would need both a custom renderer *and* a custom editor, the latter of which is active when the cell is "active". — Hovercraft Full Of Eels, Feb 22 '12 at 16:38
[`TablePopupEditor`](http://stackoverflow.com/a/3591230/230513) is a nice example. — trashgod, Feb 22 '12 at 16:47

score 5 · Accepted Answer · answered Mar 06 '13 at 13:05

Adding a JScrollPaneand placing the JLabel in the JScrollPane solved the issue. So I would like to share it with you all.

private class ExtendedTableCellEditor extends AbstractCellEditor implements TableCellEditor
{
  JLabel _component = new JLabel();
  JScrollPane _pane = new JScrollPane(_component, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

 /**
  * Returns the cell editor component.
  *
  */
  public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int rowIndex, int vColIndex)
  {
    if (value == null) return null;
    _component.setText(value != null ? value.toString() : "");
    _component.setToolTipText(value != null ? value.toString() : "");

    _component.setOpaque(true);
    _component.setBackground((isSelected) ? Color.BLUE_DARK : Color.WHITE);
    _component.setForeground((isSelected) ? Color.WHITE : Color.BLACK);

    _pane.setHorizontalScrollBar(_pane.createHorizontalScrollBar()); 
    _pane.setVerticalScrollBar(_pane.createVerticalScrollBar());
    _pane.setBorder(new EmptyBorder(0,0,0,0));
    _pane.setToolTipText(value != null ? value.toString() : "");
    return _pane;
  }
  public Object getCellEditorValue()
  {
    return _component.getText();
  }
}

Scrollable Cells in JTable

1 Answers1

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