/*
* ComparatorToString.java jchart2d
* Copyright (C) 2004 - 2011 Achim Westermann.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* Achim.Westermann@gmx.de
*
*/
package info.monitorenter.util.collections;
import java.io.Serializable;
import java.util.Comparator;
/**
* A <code>Comparator</code> that compares the given Objects by their
* {@link java.lang.Object#toString()} value.
* <p>
*
* @author <a href="mailto:Achim.Westermann@gmx.de">Achim Westermann </a>
*
* @param <T> the type to compare by <code>{@link Object#toString()}</code>.
* @version $Revision: 1.7 $
*/
public final class ComparatorToString<T> implements Comparator<T>, Serializable {
/** Generated <code>serialVersionUID</code>. */
private static final long serialVersionUID = 3682328616684815036L;
/**
* Defcon.
* <p>
*/
public ComparatorToString() {
// nop
}
/**
* Compares both Objects by their {@link Object#toString()} presentation.
* <p>
*
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
public int compare(final T o1, final T o2) throws IllegalArgumentException {
if (o1 == null) {
throw new IllegalArgumentException("Argument 1 must not be null");
}
if (o2 == null) {
throw new IllegalArgumentException("Argument 2 must not be null");
}
return o1.toString().compareTo(o2.toString());
}
}