//simple implement button action:

class TradeButton extends JButton implements TableCellRenderer {

         public   TradeButton()   {

           super();

           setOpaque(false);

         

        }

    @Override

         public   Component   getTableCellRendererComponent(JTable table, Object value,

              boolean   isSelected,

              boolean   hasFocus,

              int   row,

              int   column)   {

              if   (isSelected)   {

//                setForeground(table.getSelectionForeground());

//    setBackground(table.getSelectionBackground());

                System.out.println(row);

              }   else{

             System.out.println("nothing");

              }

                  setText(   (value   ==null)   ?   "SELL"   :   value.toString()   );

                  this.setToolTipText( "what what what??");

                  return   this;

              }

}

//good button action implement

class ButtonColumn extends AbstractCellEditor implements TableCellRenderer, TableCellEditor {

JButton renderButton;

JButton editButton;

String text;

ButtonColumn() {

renderButton = new JButton();

editButton = new JButton();

editButton.setFocusPainted(false);

}

public Component getTableCellRendererComponent(JTable table,

Object value, boolean isSelected, boolean hasFocus, int row,

int column) {

if (hasFocus) {

renderButton.setForeground(table.getForeground());

renderButton.setBackground(UIManager

.getColor("Button.background"));

} else if (isSelected) {

renderButton.setForeground(table.getSelectionForeground());

renderButton.setBackground(table.getSelectionBackground());

} else {

renderButton.setForeground(table.getForeground());

renderButton.setBackground(UIManager

.getColor("Button.background"));

}

renderButton.setText((value == null) ? "" : value.toString());

return renderButton;

}

public Component getTableCellEditorComponent(JTable table,

Object value, boolean isSelected, int row, int column) {

text = (value == null) ? "" : value.toString();

editButton.setText(text);

return editButton;

}

public Object getCellEditorValue() {

return text;

}

}

table.getColumn("321").setCellEditor(btnCol);

table.getColumn("321").setCellRenderer(btnCol);