    001package org.cpsolver.ifs.util;
    002
    003/**
    004 * Counter.
    005 *
    006 * @author  Tomáš Müller
    007 * @version IFS 1.3 (Iterative Forward Search)<br>
    008 *          Copyright (C) 2006 - 2014 Tomáš Müller<br>
    009 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    010 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    011 * <br>
    012 *          This library is free software; you can redistribute it and/or modify
    013 *          it under the terms of the GNU Lesser General Public License as
    014 *          published by the Free Software Foundation; either version 3 of the
    015 *          License, or (at your option) any later version. <br>
    016 * <br>
    017 *          This library is distributed in the hope that it will be useful, but
    018 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    019 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    020 *          Lesser General Public License for more details. <br>
    021 * <br>
    022 *          You should have received a copy of the GNU Lesser General Public
    023 *          License along with this library; if not see
    024 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    025 */
    026public class Counter {
    027    private long iValue = 0;
    028
    029    /** Set counter
    030     * @param value counter value
    031     **/
    032    public void set(long value) {
    033        iValue = value;
    034    }
    035
    036    /** Returns current value
    037     * @return counter value
    038     **/
    039    public long get() {
    040        return iValue;
    041    }
    042
    043    /** Increment counter
    044     * @param value counter increment
    045     **/
    046    public void inc(long value) {
    047        iValue += value;
    048    }
    049
    050    /** Decrement counter
    051     * @param value counter decrement
    052     **/
    053    public void dec(long value) {
    054        iValue -= value;
    055    }
    056}