import java.text.NumberFormat;
import javax.swing.table.DefaultTableCellRenderer;

public class CurrencyRenderer extends DefaultTableCellRenderer {

  public CurrencyRenderer() {
    super();
    setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
  }

  public void setValue(Object value) {
    if ((value != null) && (value instanceof Number)) {
      Number numberValue = (Number)value;
      NumberFormat formatter = NumberFormat.getCurrencyInstance();
      value =  formatter.format(numberValue.doubleValue());
    } 
    super.setValue(value);
  } 

}