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The Trove library provides high speed regular and primitive collections for Java.

There is a newer version: 3.0.3

///////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2001, Jason Baldridge 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 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 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
///////////////////////////////////////////////////////////////////////////////

package gnu.trove;

/**
 * Adapter for TLinkable interface which implements the interface and can
 * therefore be extended trivially to create TLinkable objects without
 * having to implement the obvious.
 *
 * 
 * Created: Thurs Nov 15 16:25:00 2001
 * 
 *
 * @author Jason Baldridge
 * @version $Id: TLinkableAdapter.java,v 1.1 2006/11/10 23:27:56 robeden Exp $
 * @see gnu.trove.TLinkedList
 */

public class TLinkableAdapter implements TLinkable {
    TLinkable _previous, _next;
    
    /**
     * Returns the linked list node after this one.
     *
     * @return a TLinkable value
     */
    public TLinkable getNext() {
    return _next;
    }

    /**
     * Returns the linked list node before this one.
     *
     * @return a TLinkable value
     */
    public TLinkable getPrevious() {
    return _previous;
    }

    /**
     * Sets the linked list node after this one.
     *
     * @param linkable a TLinkable value
     */
    public void setNext(TLinkable linkable) {
    _next = linkable;
    }

    /**
     * Sets the linked list node before this one.
     *
     * @param linkable a TLinkable value
     */
    public void setPrevious(TLinkable linkable) {
    _previous = linkable;
    }
}