Buggy code:
//* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. * * Project Info:  http: * * 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 Street, Fifth Floor, Boston, MA  02110-1301,  * USA.   * * [Java is a trademark or registered trademark of Sun Microsystems, Inc.  * in the United States and other countries.] * * ---------------- * ValueMarker.java * ---------------- * (C) Copyright 2004-2007, by Object Refinery Limited. * * Original Author:  David Gilbert (for Object Refinery Limited); * Contributor(s):   -; * * Changes * ------- * 09-Feb-2004 : Version 1 (DG); * 16-Feb-2005 : Added new constructor (DG); * ------------- JFREECHART 1.0.x --------------------------------------------- * 05-Sep-2006 : Added setValue() method (DG); * 08-Oct-2007 : Fixed bug 1808376, constructor calling super with incorrect *               values (DG); *  *//package org.jfree.chart.plot;import java.awt.Paint;import java.awt.Stroke;import org.jfree.chart.event.MarkerChangeEvent;//** * A marker that represents a single value.  Markers can be added to plots to * highlight specific values. *//public class ValueMarker extends Marker {        //** The value. *//    private double value;    //**     * Creates a new marker.     *      * @param value  the value.     *//    public ValueMarker(double value) {        super();        this.value = value;    }        //**     * Creates a new marker.     *      * @param value  the value.     * @param paint  the paint (<code>null<//code> not permitted).     * @param stroke  the stroke (<code>null<//code> not permitted).     *//    public ValueMarker(double value, Paint paint, Stroke stroke) {        this(value, paint, stroke, paint, stroke, 1.0f);    }        //**     * Creates a new value marker.     *      * @param value  the value.     * @param paint  the paint (<code>null<//code> not permitted).     * @param stroke  the stroke (<code>null<//code> not permitted).     * @param outlinePaint  the outline paint (<code>null<//code> permitted).     * @param outlineStroke  the outline stroke (<code>null<//code> permitted).     * @param alpha  the alpha transparency (in the range 0.0f to 1.0f).     *//    public ValueMarker(double value, Paint paint, Stroke stroke,                        Paint outlinePaint, Stroke outlineStroke, float alpha) {        <START_BUG> super(paint, stroke, paint, stroke, alpha); <END_BUG>        this.value = value;    }        //**     * Returns the value.     *     * @return The value.     *      * @see #setValue(double)     *//    public double getValue() {        return this.value;    }        //**     * Sets the value for the marker and sends a {@link MarkerChangeEvent} to      * all registered listeners.     *      * @param value  the value.     *      * @see #getValue()     *      * @since 1.0.3     *//    public void setValue(double value) {         this.value = value;        notifyListeners(new MarkerChangeEvent(this));    }    //**     * Tests this marker for equality with an arbitrary object.  This method     * returns <code>true<//code> if:     *      * <ul>     * <li><code>obj<//code> is not <code>null<//code>;<//li>     * <li><code>obj<//code> is an instance of <code>ValueMarker<//code>;<//li>     * <li><code>obj<//code> has the same value as this marker;<//li>     * <li><code>super.equals(obj)<//code> returns <code>true<//code>.<//li>     * <//ul>     *      * @param obj  the object (<code>null<//code> permitted).     *      * @return A boolean.     *//    public boolean equals(Object obj) {        if (obj == this) {            return true;        }        if (!super.equals(obj)) {            return false;        }        if (!(obj instanceof ValueMarker)) {            return false;        }        ValueMarker that = (ValueMarker) obj;        if (this.value != that.value) {            return false;        }        return true;    }}


Fix:
super(paint, stroke, outlinePaint, outlineStroke, alpha);