JFreeChart Bar Chart

by Online Tutorials Library July 14, 2022

JFreeChart-Bar Chart

A bar chart is a chart that represents the grouped data with rectangles. The height or length of the bar is propositional to the value that represents the bar.

The following images show some of the demo versions of bar chart incorporated in JFreeChart library:

Bar Chart Demo 1:

Bar Chart Demo 2:

Bar Chart Demo 3:

Bar Chart Demo 4:

Bar Chart example

Let us consider a sample input data for our bar chart example.

Year	Population in Million
Year	USA	INDIA	CHINA
2005	10	15	20
2010	15	20	25
2015	20	25	30

The following codes create a bar chart from the above sample data:

BarChartExample.java

  import javax.swing.JFrame;  import javax.swing.SwingUtilities;    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 BarChartExample extends JFrame {      private static final long serialVersionUID = 1L;      public BarChartExample(String appTitle) {      super(appTitle);        // Create Dataset      CategoryDataset dataset = createDataset();            //Create chart      JFreeChart chart=ChartFactory.createBarChart(          “Bar Chart Example”, //Chart Title          “Year”, // Category axis          “Population in Million”, // Value axis          dataset,          PlotOrientation.VERTICAL,          true,true,false         );        ChartPanel panel=new ChartPanel(chart);      setContentPane(panel);    }      private CategoryDataset createDataset() {      DefaultCategoryDataset dataset = new DefaultCategoryDataset();        // Population in 2005      dataset.addValue(10, “USA”, “2005”);      dataset.addValue(15, “India”, “2005”);      dataset.addValue(20, “China”, “2005”);        // Population in 2010      dataset.addValue(15, “USA”, “2010”);      dataset.addValue(20, “India”, “2010”);      dataset.addValue(25, “China”, “2010”);        // Population in 2015      dataset.addValue(20, “USA”, “2015”);      dataset.addValue(25, “India”, “2015”);      dataset.addValue(30, “China”, “2015”);        return dataset;    }      public static void main(String[] args) throws Exception {      SwingUtilities.invokeAndWait(()->{        BarChartExample example=new BarChartExample(“Bar Chart Window”);        example.setSize(800, 400);        example.setLocationRelativeTo(null);        example.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);        example.setVisible(true);      });    }  }  

Output:

Next TopicJfreeChart-Line Chart

JFreeChart Bar Chart

JFreeChart-Bar Chart

Bar Chart example

BarChartExample.java

JavaScript Window open method

Build JMeter Test Plan

You may also like