datapoint.java

jacckit的说明文档,介绍了使用说明,各种接口的使用,是个好的帮助文章

/*
 * Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details
 * (http://www.gnu.org/copyleft/lesser.html).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcckit.data;

import jcckit.util.Point;

/**
 *  Immutable two-dimensional point in data coordinates.
 *
 *  @author Franz-Josef Elmer
 */
public class DataPoint extends Point implements DataElement {
  public DataPoint(double x, double y) {
    super(x, y);
  }

  /** Returns always <tt>null</tt>. */
  public DataContainer getContainer() {
    return null;
  }

  /** Does nothing. */
  public void setContainer(DataContainer container) {}
}