Got this example of the web but when trying to compile it gives me a ton of errors related to referencing classes from JFreeChart. When I extract the files where should I extract to (i.e. which directory)? Also, curious question since new to Java) when referencing such classes as java.awt and swing where are these jar files normally stored? Thanks in advance.
The fish thanks you.
package com.javasrc.charts;
// Import the Swing classes
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
// Import the JFreeChart classes
import org.jfree.chart.*;
import org.jfree.chart.plot.*;
import org.jfree.data.*;
import org.jfree.data.general.*;
public class PieChartExample extends JPanel
{
// Holds the data
private DefaultPieDataset dataset = new DefaultPieDataset();
// Create a set of charts
private JFreeChart chart1;
private JFreeChart chart2;
private JFreeChart chart3;
private JFreeChart chart4;
// Create a set of panels that can show charts
private ChartPanel panel1;
private ChartPanel panel2;
private ChartPanel panel3;
private ChartPanel panel4;
public PieChartExample()
{
// Initialize the dataset
dataset.setValue( "California", new Double( 10.0 ) );
dataset.setValue( "Arizona", new Double( 8.0 ) );
dataset.setValue( "New Mexico", new Double( 8.0 ) );
dataset.setValue( "Texas", new Double( 40.0 ) );
dataset.setValue( "Louisiana", new Double( 8.0 ) );
dataset.setValue( "Mississippi", new Double( 4.0 ) );
dataset.setValue( "Alabama", new Double( 2.0 ) );
dataset.setValue( "Florida", new Double( 20.0 ) );
// Create the charts
chart1 = ChartFactory.createPieChart(
"Driving Time Spent Per State (Flat Pie Chart)", // The chart title
dataset, // The dataset for the chart
true, // Is a legend required?
true, // Use tooltips
false // Configure chart to generate URLs?
);
chart2 = ChartFactory.createPieChart(
"Driving Time Spent Per State (Exploded Pie Chart)", // The chart title
dataset, // The dataset for the chart
true, // Is a legend required?
true, // Use tooltips
false // Configure chart to generate URLs?
);
PiePlot plot = ( PiePlot )chart2.getPlot();
plot.setExplodePercent( 3, 0.25 );
chart3 = ChartFactory.createPieChart3D(
"Driving Time Spent Per State (3D Pie Chart)", // The chart title
dataset, // The dataset for the chart
true, // Is a legend required?
true, // Use tooltips
false // Configure chart to generate URLs?
);
chart4 = ChartFactory.createPieChart3D(
"Driving Time Spent Per State (3D with Transparency)", // The chart title
dataset, // The dataset for the chart
true, // Is a legend required?
true, // Use tooltips
false // Configure chart to generate URLs?
);
PiePlot3D plot4 = ( PiePlot3D )chart4.getPlot();
plot4.setForegroundAlpha( 0.6f );
// Create this panel
this.setLayout( new GridLayout( 2, 2 ) );
this.panel1 = new ChartPanel( chart1 );
this.panel2 = new ChartPanel( chart2 );
this.panel3 = new ChartPanel( chart3 );
this.panel4 = new ChartPanel( chart4 );
this.add( panel1 );
this.add( panel2 );
this.add( panel3 );
this.add( panel4 );
}
public static void main( String[] args )
{
JFrame frame = new JFrame( "My Trip Driving From CA to FL..." );
PieChartExample chart = new PieChartExample();
frame.getContentPane().add( chart, BorderLayout.CENTER );
frame.setSize( 640, 480 );
frame.setVisible( true );
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
}
}