Download JFreeChart – Professional Java Chart and Graph Library

JFreeChart is a comprehensive, free, and open-source chart library for Java that enables developers to create professional-quality charts and graphs for both desktop Swing applications and server-side web applications. It supports a wide range of chart types and produces high-quality output in multiple formats including PNG, JPEG, PDF, and SVG.

Originally developed by David Gilbert and now maintained by an active open-source community, JFreeChart has been widely adopted in enterprise Java applications, reporting systems, scientific tools, and data visualization dashboards. It integrates easily with Swing, JavaFX, Spring, and Jakarta EE applications.

JFreeChart’s API is well-documented and highly customizable — developers can control colors, fonts, axis labels, tick marks, tooltips, legends, and nearly every visual element. It also supports real-time chart updates for live data monitoring applications.

Key Features

• Supports bar, pie, line, area, scatter, time series, Gantt, waterfall, and many more chart types.
• High-quality rendering to PNG, JPEG, PDF (via iText), and SVG (via Batik).
• Highly customizable appearance: colors, fonts, axis formatting, tooltips, and legends.
• Real-time chart updates for live data monitoring and streaming applications.
• Integrates with Swing, JavaFX, Spring MVC, and Jakarta EE web frameworks.
• Comprehensive Javadoc documentation and extensive example code included.
• Free and open source under the GNU LGPL license — suitable for commercial use.

How to Install

1. Download the JFreeChart JAR files from the link below.
2. Add jfreechart-x.x.x.jar and jcommon-x.x.x.jar to your project’s classpath.
3. For Maven projects, add the JFreeChart dependency to your pom.xml.
4. Import org.jfree.chart.ChartFactory and related classes in your Java code.
5. Call ChartFactory.createBarChart() (or another chart method), configure the dataset, and render the chart to a panel or image file.