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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D API, it supports a wide range of chart types including
bar charts, pie charts, line charts, XY-plots, time series plots, Sankey charts
and more.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, by David Gilbert 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------
* DateTick.java
* -------------
* (C) Copyright 2003-present, by David Gilbert.
*
* Original Author: David Gilbert;
* Contributor(s): Peter Kolb (patch 1934255);
* Andrew Mickish (patch 1870189);
*
*/
package org.jfree.chart.axis;
import java.util.Date;
import java.util.Objects;
import org.jfree.chart.ui.TextAnchor;
import org.jfree.chart.util.Args;
/**
* A tick used by the {@link DateAxis} class.
*/
public class DateTick extends ValueTick {
/** The date. */
private final 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 ({@code null} not permitted).
* @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(TickType tickType, Date date, String label,
TextAnchor textAnchor, TextAnchor rotationAnchor,
double angle) {
super(tickType, date.getTime(), label, textAnchor, rotationAnchor,
angle);
Args.nullNotPermitted(tickType, "tickType");
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.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof DateTick)) {
return false;
}
DateTick that = (DateTick) obj;
if (!Objects.equals(this.date, that.date)) {
return false;
}
return super.equals(obj);
}
/**
* Returns a hash code for this object.
*
* @return A hash code.
*/
@Override
public int hashCode() {
return this.date.hashCode();
}
}