IdAlreadyInUseException.java
/*
* Copyright 2006 - 2013
* Stefan Balev <stefan.balev@graphstream-project.org>
* Julien Baudry <julien.baudry@graphstream-project.org>
* Antoine Dutot <antoine.dutot@graphstream-project.org>
* Yoann Pign�� <yoann.pigne@graphstream-project.org>
* Guilhelm Savin <guilhelm.savin@graphstream-project.org>
*
* This file is part of GraphStream <http://graphstream-project.org>.
*
* GraphStream is a library whose purpose is to handle static or dynamic
* graph, create them from scratch, file or any source and display them.
*
* This program is free software distributed under the terms of two licenses, the
* CeCILL-C license that fits European law, and the GNU Lesser General Public
* License. You can use, modify and/ or redistribute the software under the terms
* of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
* URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
* the Free Software Foundation, either version 3 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
*/
package org.graphstream.graph;
/**
* Singleton exception.
*
* <p>
* This exception can be raised when a class instance should be unique in one
* context, but was instantiated several times. This can be used in a
* "singleton" pattern, but also in set classes (containers) when the same
* element has been inserted multiple times but should not.
* </p>
*
* @since 19990811
*/
public class IdAlreadyInUseException extends RuntimeException {
private static final long serialVersionUID = -3000770118436738366L;
/**
* Throws the message "singleton exception".
*/
public IdAlreadyInUseException() {
super("singleton exception");
}
/**
* Throws a given message.
*
* @param message
* The message to throw.
*/
public IdAlreadyInUseException(String message) {
super("singleton exception: " + message);
}
}