jfreechart example source code file (DateTick.java)

This example jfreechart source code file (DateTick.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jfreechart tags/keywords

date, date, datetick, datetick, string, string, textanchor, textanchor, util, valuetick

The jfreechart DateTick.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * 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.]
 *
 * -------------
 * DateTick.java
 * -------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Peter Kolb (patch 1934255);
 *                   Andrew Mickish (patch 1870189);
 *
 * Changes
 * -------
 * 07-Nov-2003 : Version 1 (DG);
 * 13-May-2004 : Added equals() method (DG);
 * 25-Sep-2008 : Added minor tick support, see patch 1934255 by Peter Kolb (DG);
 *
 */

package org.jfree.chart.axis;

import java.util.Date;

import org.jfree.ui.TextAnchor;
import org.jfree.util.ObjectUtilities;

/**
 * A tick used by the {@link DateAxis} class.
 */
public class DateTick extends ValueTick {

    /** The date. */
    private Date date;

    /**
     * Creates a new date tick.
     *
     * @param date  the date.
     * @param label  the label.
     * @param textAnchor  the part of the label that is aligned to the anchor
     *                    point.
     * @param rotationAnchor  defines the rotation point relative to the text.
     * @param angle  the rotation angle (in radians).
     */
    public DateTick(Date date, String label,
                    TextAnchor textAnchor, TextAnchor rotationAnchor,
                    double angle) {

        this(TickType.MAJOR, date, label, textAnchor, rotationAnchor, angle);

    }

    /**
     * Creates a new date tick.
     *
     * @param tickType the tick type.
     * @param date  the date.
     * @param label  the label.
     * @param textAnchor  the part of the label that is aligned to the anchor
     *                    point.
     * @param rotationAnchor  defines the rotation point relative to the text.
     * @param angle  the rotation angle (in radians).
     *
     * @since 1.0.12
     */
    public DateTick(TickType tickType, Date date, String label,
                    TextAnchor textAnchor, TextAnchor rotationAnchor,
                    double angle) {

        super(tickType, date.getTime(), label, textAnchor, rotationAnchor, angle);
        this.date = date;

    }

    /**
     * Returns the date.
     *
     * @return The date.
     */
    public Date getDate() {
        return this.date;
    }

    /**
     * Tests this tick for equality with an arbitrary object.
     *
     * @param obj  the object to test (<code>null permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof DateTick)) {
            return false;
        }
        DateTick that = (DateTick) obj;
        if (!ObjectUtilities.equal(this.date, that.date)) {
            return false;
        }
        return super.equals(obj);
    }

    /**
     * Returns a hash code for this object.
     *
     * @return A hash code.
     */
    public int hashCode() {
        return this.date.hashCode();
    }

}