www.pudn.com > jfreereport-0.8.3f.zip > HelloWorld.java

/** 
 * ======================================== 
 * 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. 
 * 
 * --------------- 
 * HelloWorld.java 
 * --------------- 
 * (C)opyright 2002, 2003, by Simba Management Limited. 
 * 
 * Original Author:  David Gilbert (for Simba Management Limited); 
 * Contributor(s):   -; 
 * 
 * $Id: HelloWorld.java,v 1.10.2.2 2003/08/24 14:18:07 taqua Exp $ 
 * 
 * Changes 
 * ------- 
 * 10-Dec-2002 : Version 1 (DG); 
 * 
 */ 
 
package com.jrefinery.report.demo; 
 
import java.awt.Color; 
import java.awt.event.WindowAdapter; 
import java.awt.event.WindowEvent; 
import java.awt.geom.Rectangle2D; 
import javax.swing.table.DefaultTableModel; 
import javax.swing.table.TableModel; 
 
import com.jrefinery.report.ElementAlignment; 
import com.jrefinery.report.ItemFactory; 
import com.jrefinery.report.JFreeReport; 
import com.jrefinery.report.ReportProcessingException; 
import com.jrefinery.report.TextElement; 
import com.jrefinery.report.preview.PreviewDialog; 
import com.jrefinery.report.util.Log; 
 
/** 
 * A very simple JFreeReport demo.  The purpose of this demo is to illustrate the basic steps 
 * required to connect a report definition with some data and display a report preview on-screen. 
 * 
 * In this example, the report definition is created in code.  It is also possible to read a 
 * report definition from an XML file...that is demonstrated elsewhere. 
 * 
 * @author David Gilbert 
 */ 
public class HelloWorld 
{ 
  /** 
   * Window close handler. 
   */ 
  protected class CloseHandler extends WindowAdapter 
  { 
    /** 
     * Handles the window closing event. 
     * 
     * @param event  the window event. 
     */ 
    public void windowClosing(final WindowEvent event) 
    { 
      System.exit(0); 
    } 
  } 
 
  /** 
   * Creates and displays a simple report. 
   */ 
  public HelloWorld() 
  { 
 
    final TableModel data = createData(); 
    final JFreeReport report = createReportDefinition(); 
    report.setData(data); 
    try 
    { 
      final PreviewDialog preview = new PreviewDialog(report); 
      preview.addWindowListener(new CloseHandler()); 
      preview.pack(); 
      preview.setVisible(true); 
    } 
    catch (ReportProcessingException e) 
    { 
      Log.error("Failed to generate report ", e); 
    } 
 
  } 
 
  /** 
   * Creates a small dataset to use in a report.  JFreeReport always reads data from a 
   * TableModel instance. 
   * 
   * @return a dataset. 
   */ 
  private TableModel createData() 
  { 
 
    final Object[] columnNames = new String[]{"Column1", "Column2"}; 
    final DefaultTableModel result = new DefaultTableModel(columnNames, 1); 
    result.setValueAt("Hello", 0, 0); 
    result.setValueAt("World!", 0, 1); 
    return result; 
 
  } 
 
  /** 
   * Creates a report definition. 
   * 
   * @return a report definition. 
   */ 
  private JFreeReport createReportDefinition() 
  { 
 
    final JFreeReport report = new JFreeReport(); 
    report.setName("A Very Simple Report"); 
 
    final TextElement t1 = ItemFactory.createStringElement( 
        "T1", 
        new Rectangle2D.Double(0.0, 0.0, 150.0, 20.0), 
        Color.black, 
        ElementAlignment.LEFT.getOldAlignment(), 
        ElementAlignment.MIDDLE.getOldAlignment(), 
        null, // font 
        "-", // null string 
        "Column1" 
    ); 
 
    report.getItemBand().addElement(t1); 
 
    final TextElement t2 = ItemFactory.createStringElement( 
        "T2", 
        new Rectangle2D.Double(200.0, 0.0, 150.0, 20.0), 
        Color.black, 
        ElementAlignment.LEFT.getOldAlignment(), 
        ElementAlignment.MIDDLE.getOldAlignment(), 
        null, // font 
        "-", // null string 
        "Column2" 
    ); 
 
    report.getItemBand().addElement(t2); 
    return report; 
 
  } 
 
  /** 
   * The starting point for the "Hello World" demo application. 
   * 
   * @param args  ignored. 
   */ 
  public static void main(final String[] args) 
  { 
    //final HelloWorld app =  
    new HelloWorld(); 
  } 
 
}