/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* 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 library 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.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* (C) Copyright 2012, by Michael Clarke and Contributors.
*
* Original Author: Michael Clarke;
*
*/
package org.jfree.chart.axis;
import java.io.Serializable;
import java.util.Comparator;
public class NumberComparator implements Comparator<Number>, Serializable {
@Override
public int compare(Number o1, Number o2) {
if (o1 == null) {
if (o2 == null) {
return 0;
}
return 1;
}
if (o2 == null) {
return -1;
}
return ((Double) o1.doubleValue()).compareTo(o2.doubleValue());
}
}