Java tutorial
/**************************************************** Statistics Online Computational Resource (SOCR) http://www.StatisticsResource.org All SOCR programs, materials, tools and resources are developed by and freely disseminated to the entire community. Users may revise, extend, redistribute, modify under the terms of the Lesser GNU General Public License as published by the Open Source Initiative http://opensource.org/licenses/. All efforts should be made to develop and distribute factually correct, useful, portable and extensible resource all available in all digital formats for free over the Internet. SOCR resources are distributed in the hope that they will be useful, but without any warranty; without any explicit, implicit or implied warranty for merchantability or fitness for a particular purpose. See the GNU Lesser General Public License for more details see http://opensource.org/licenses/lgpl-license.php. http://www.SOCR.ucla.edu http://wiki.stat.ucla.edu/socr It s Online, Therefore, It Exists! ****************************************************/ package edu.ucla.stat.SOCR.chart.gui; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.Timer; import org.jfree.chart.plot.PiePlot; import org.jfree.chart.plot.PiePlot3D; /** * The rotator. */ public class Rotator extends Timer implements ActionListener { /** * The plot. * @uml.property name="plot" * @uml.associationEnd multiplicity="(1 1)" */ private PiePlot plot; /** * The angle. * @uml.property name="angle" */ private int angle = 270; /** * Constructor. * * @param plot the plot. */ public Rotator(PiePlot3D plot) { super(100, null); this.plot = plot; addActionListener(this); } public Rotator(PiePlot plot) { super(100, null); this.plot = plot; addActionListener(this); } /** * Modifies the starting angle. * * @param event the action event. */ public void actionPerformed(ActionEvent event) { this.plot.setStartAngle(this.angle); this.angle = this.angle + 1; if (this.angle == 360) { this.angle = 0; } } }