Create Bar Chart Using JFreeChart
Create Bar Chart Using JFreeChart explains about creating a simple bar chart using JFreechart API
A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column bar chart
Reference -> http://en.wikipedia.org/wiki/Bar_chart
How To Create Bart Chart Using JFreeChart library?
JFreeChart is a free and open source java chart library used for creating professional quality charts. JFreeChart is purely written in java language, we can very easily incorporate JFreeChart in our java standalone and web applications.
Referenece - > http://www.jfree.org/jfreechart/
Here I am showing an example about How to create a simple Bar Chart using JFreeChart.
Required Libraries
You need to download
Following jar must be in classpath
- jfreechart-1.5.0.jar
- jcommon-1.0.24.jar
pom.xml
<dependency> <groupId>org.jfree</groupId> <artifactId>jfreechart</artifactId> <version>1.5.0</version> </dependency> <dependency> <groupId>org.jfree</groupId> <artifactId>jcommon</artifactId> <version>1.0.24</version> </dependency>
We can create following professional quality charts by using jfreechart.
- Single valued Charts such as compass, speedometer, thermometer
- Line Chart
- Pie Chart
- Bar Chart
- Bubble Chart
- Wind Chart
- Polar Chart
JFreeChart Example(Bar Chart)
import javax.swing.JFrame;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
public class JFreeChartBarChartExample extends JFrame {
private static final long serialVersionUID = 1L;
public JFreeChartBarChartExample(String applicationTitle, String chartTitle) {
super(applicationTitle);
// based on the dataset we create the chart
JFreeChart pieChart = ChartFactory.createBarChart(chartTitle, "Category", "Score", createDataset(),PlotOrientation.VERTICAL, true, true, false);
// Adding chart into a chart panel
ChartPanel chartPanel = new ChartPanel(pieChart);
// settind default size
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
// add to contentPane
setContentPane(chartPanel);
}
private CategoryDataset createDataset() {
// row keys...
final String firefox = "Firefox";
final String chrome = "Chrome";
final String iexplorer = "InternetExplorer";
// column keys...
final String speed = "Speed";
final String popular = "Popular";
final String response = "Response";
final String osindependent = "OS Independent";
final String features = "Features";
// create the dataset...
final DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(1.0, firefox, speed);
dataset.addValue(4.0, firefox, popular);
dataset.addValue(3.0, firefox, response);
dataset.addValue(5.0, firefox, osindependent);
dataset.addValue(5.0, firefox, features);
dataset.addValue(5.0, chrome, speed);
dataset.addValue(7.0, chrome, popular);
dataset.addValue(6.0, chrome, response);
dataset.addValue(8.0, chrome, osindependent);
dataset.addValue(4.0, chrome, features);
dataset.addValue(4.0, iexplorer, speed);
dataset.addValue(3.0, iexplorer, popular);
dataset.addValue(2.0, iexplorer, response);
dataset.addValue(3.0, iexplorer, osindependent);
dataset.addValue(6.0, iexplorer, features);
return dataset;
}
public static void main(String[] args) {
JFreeChartBarChartExample chart = new JFreeChartBarChartExample("Browser Usage Statistics", "Which Browser are you using?");
chart.pack();
chart.setVisible(true);
}
}
Output
