Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package gui.statistics; import db.Database; import java.awt.image.BufferedImage; import java.math.BigDecimal; import java.sql.Date; import java.util.HashMap; import java.util.Locale; import javax.swing.ImageIcon; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PiePlot; import org.jfree.data.general.DefaultPieDataset; /** * * @author bwaidach */ public class PieChartTest extends javax.swing.JDialog { /** * Creates new form PieChartTest */ public PieChartTest(java.awt.Frame parent, boolean modal) { super(parent, modal); initComponents(); Date a = new Date(2014 - 1900, 11, 1); Date b = new Date(2014 - 1900, 11, 31); DefaultPieDataset data = new DefaultPieDataset(); HashMap<String, BigDecimal> map = Database.getInstance().getTotalExpensesByCategory(a, b); for (String key : map.keySet()) { data.setValue(key, map.get(key).doubleValue()); } JFreeChart pieChart = ChartFactory.createPieChart("PIE CHART", data, true, false, Locale.GERMAN); PiePlot plot = (PiePlot) pieChart.getPlot(); plot.setLabelGenerator(null); BufferedImage pie = pieChart.createBufferedImage(500, 400); setSize(600, 500); jLabel1.setIcon(new ImageIcon(pie)); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { jLabel1 = new javax.swing.JLabel(); setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE); getContentPane().add(jLabel1, java.awt.BorderLayout.CENTER); pack(); }// </editor-fold>//GEN-END:initComponents /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(PieChartTest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(PieChartTest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(PieChartTest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(PieChartTest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the dialog */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { PieChartTest dialog = new PieChartTest(new javax.swing.JFrame(), true); dialog.addWindowListener(new java.awt.event.WindowAdapter() { @Override public void windowClosing(java.awt.event.WindowEvent e) { System.exit(0); } }); dialog.setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JLabel jLabel1; // End of variables declaration//GEN-END:variables }