opensourcedemoapplet.java

swing编写的库存管理程序。毕业设计类

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner;
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ------------------------------
 * OpenSourceDemoApplet.java
 * ------------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: OpenSourceDemoApplet.java,v 1.4 2003/11/07 18:33:48 taqua Exp $
 *
 * Changes
 * -------------------------
 * 19-Jun-2003 : Initial version
 *
 */

package org.jfree.report.demo;

import org.jfree.report.Boot;
import org.jfree.report.JFreeReport;
import org.jfree.report.modules.gui.base.PreviewApplet;

/**
 * This demo application replicates the report generated by OpenSourceDemo.java, but creates
 * the report in code rather than using an XML report template. The whole report is
 * displayed in an applet.
 * <p>
 * To use or adopt that applet to your own needs, just change the getReport() method
 * and your applet should work perfectly ...
 *
 * @author Thomas Morgner
 */
public class OpenSourceDemoApplet extends PreviewApplet
{
  /** The report (created in code). */
  private JFreeReport report;

  /**
   * Constructs the demo applet.
   */
  public OpenSourceDemoApplet()
  {
    // initialize JFreeReport
    Boot.start();
  }

  /**
   * Creates a report definition in code.
   * <p>
   * It is more base to read the definition from an XML report template file, but sometimes you
   * might need to create a report dynamically.
   *
   * @return a report.
   */
  public JFreeReport getReport()
  {

    if (this.report != null)
    {
      return this.report;
    }

    // uses the report from the OpenSourceDemo 2 ...
    this.report = OpenSourceDemo2.createReport();
    this.report.setData(new OpenSourceProjects());
    return report;
  }

}