CellDoubleRenderer.java

package net.seninp.grammarviz.view.table;

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

/**
 * Implements a cell renderer for a Double class.
 * 
 * @author psenin
 * 
 */
public class CellDoubleRenderer extends DefaultTableCellRenderer {

  /** A fancy serial. */
  private static final long serialVersionUID = 3040778303718817255L;

  /**
   * Constructor.
   */
  public CellDoubleRenderer() {
    super();
  }

  @Override
  public void setValue(Object aValue) {
    Object result = aValue;
    if ((aValue != null) && (aValue instanceof Number)) {
      Number numberValue = (Number) aValue;
      NumberFormat formatter = NumberFormat.getNumberInstance();
      DecimalFormat df = (DecimalFormat) formatter;
      df.applyPattern("##0.00000");
      result = df.format(numberValue.doubleValue());
    }
    super.setValue(result);
    super.setHorizontalAlignment(SwingConstants.RIGHT);
  }
}