/* $RCSfile$
* $Author$
* $Date$
* $Revision$
*
* Copyright (C) 1997-2007 The Chemistry Development Kit (CDK) project
*
* Contact: cdk-devel@lists.sourceforge.net
*
* This program 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.
* All we ask is that proper credit is given for our work, which includes
* - but is not limited to - adding the above copyright notice to the beginning
* of your source code files, and to any copyright notice that you may distribute
* with programs based on this work.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
package org.openscience.cdk.ringsearch;
import org.openscience.cdk.annotations.TestClass;
import org.openscience.cdk.annotations.TestMethod;
import java.util.Vector;
/**
* Implementation of a Queue (FIFO stack).
*
* @cdk.module standard
* @cdk.githash
*/
@TestClass("org.openscience.cdk.ringsearch.QueueTest")
public class Queue extends Vector
{
private static final long serialVersionUID = 1008167867733841614L;
/**
* Constructs an empty Queue
*
*/
public Queue(){
super();
}
/**
* Places an Object into the queue
*
* @param o The object to be pushed into the queue
*/
@TestMethod("testOperations")
public void push(Object o){
addElement(o);
}
/**
* Returns an Object from the queue
*
* @return The object that had been pushed first into the queue
*/
@TestMethod("testOperations")
public Object pop(){
Object o = elementAt(0);
removeElementAt(0);
return o;
}
}